{"title":"Nitro Engines","description":"\u003cp\u003eTake a look at our wide variety of nitro engines to choose from. The competitive side of rc requires that you have the proper engine for your driving style and needs. Find the right torque and speed right here.\u003c\/p\u003e","products":[{"product_id":"j-t-os-circular-carburetor-seal-black-jtb-jt10991-b","title":"J\u0026T OS Circular Carburetor Seal Black JTB-JT10991-B","description":"\u003cp\u003e\u003cspan\u003eThe J\u0026amp;T carburetor circular seal is a great addition to any On-Road or Off-road engine utilizing the OS 21J carb. Installation is extremely simple, just slide onto the the dust boot until the circular seal is seated against the carb or at the end of the dust boot. 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Included is also the exhaust stop that adds extra security to keep your pipe in place if the exhaust set screw happens to come loose during a long a main event.\u003c\/span\u003e\u003c\/p\u003e","brand":"Pit Stop Hobby","offers":[{"title":"Default Title","offer_id":51331039789361,"sku":"","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom-20220708-134202_540x_9f59eb26-3293-464c-94fa-409eb0eef60e.webp?v=1746829921"},{"product_id":"j-t-grip-tight-4-in-1-glow-plug-cross-wrench","title":"J\u0026T Grip Tight 4-in-1 Glow Plug Cross Wrench","description":"\u003cp\u003eThe J\u0026amp;T Grip Tight Glow Plug wrench features a 8mm end for installing and removing glow plug. A 10mm end for installing and removing applicable clutch flywheel nuts. On the tee handle a 3mm as well as a 5mm allen for further convenience in one tool. Not to mention the color sets it apart from the competition.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCombo wrench for multiple applications\u003c\/li\u003e\n\u003cli\u003eUnique color\u003c\/li\u003e\n\u003cli\u003eLaser etched J\u0026amp;T Logo\u003c\/li\u003e\n\u003cli\u003eMade with quality materials for longer life\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":51735943020849,"sku":null,"price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/Photoroom_20240720_120945_2048x_25c5c94d-bb8d-4811-8a07-bad21c83bd15.webp?v=1755191445"},{"product_id":"j-t-pro-fuel-stick-jt10504","title":"J\u0026T Pro Fuel Stick #JT10504","description":"\u003cp\u003e\u003cspan\u003eCheck out all the information on the new J\u0026amp;T Pro fuel stick. Ergonomically-shaped Fuel stick with extended nozzle head to avoid contact with the body shell. 6-hole diffuser and Non-slip surface makes fast and accurate re-fuelling. New cap design with O-ring seal. Stainless screw set giving you a high-quality Fuel stick at a fuel gun price!\u003c\/span\u003e\u003c\/p\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":51735959142705,"sku":null,"price":39.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/IMG_8055_2048x_7c763a9d-b569-4d67-87ae-2e47778ae801.webp?v=1755192743"},{"product_id":"kyosho-mp10-mp9-pre-oiled-air-filter-pack-of-10-tz654-001-12-r","title":"Kyosho MP10 \u0026 MP9 Pre-Oiled Air Filter (Pack of 10) TZ654-001-12-R","description":"\u003cul class=\"product-tabs__tab-list\" data-tab-list=\"\"\u003e\n\u003cli id=\"product-tab--product_description\" class=\"product-tabs__tab-item\n        active\" aria-hidden=\"false\" data-tab-item=\"\"\u003e\n\u003cdiv class=\"product-tabs__tab-item-content\n    product-tabs__tab-item-content--vertical-alignment-\"\u003e\n\u003cdiv class=\"product-tabs__tab-column\"\u003e\n\u003cdiv class=\"product-tabs__tab-text-container\"\u003e\n\u003ch3 class=\"product-tabs__tab-heading ff-heading fs-heading-4-base\"\u003eDescription\u003c\/h3\u003e\n\u003cdiv class=\"product-tabs__tab-text ff-body fs-body-100 rte\"\u003e\n\u003cdiv dir=\"ltr\"\u003e\n\u003cdiv dir=\"ltr\"\u003eKyosho Style Air Filter\u003c\/div\u003e\n\u003cdiv dir=\"ltr\"\u003e**Price:** $19.99\u003c\/div\u003e\n\u003cdiv dir=\"ltr\"\u003e- Pre-oiled for optimal engine protection.\u003c\/div\u003e\n\u003cdiv dir=\"ltr\"\u003e- Perfect fit for Kyosho MP10 \u0026amp; MP9 models.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TZO","offers":[{"title":"Default Title","offer_id":51975486996785,"sku":null,"price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/Completed_KYOAF.webp?v=1761594263"},{"product_id":"j-t-torque-vented-clutch-bell-13t-4-shoe","title":"J\u0026T Torque Vented Clutch Bell 13T (4 Shoe)","description":"\u003cp\u003eThe J\u0026amp;T Clutch bell is hardened and precision machined for a direct and precise fit. Along with lasting performance this clutch bell is also vented and features a J\u0026amp;T laser logo.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits the J\u0026amp;T 4 Shoe Clutch and Protea 4 Shoe\u003c\/li\u003e\n\u003cli\u003efits 5x10x4 clutch bell bearings\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":52186619085105,"sku":null,"price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom-20231020-125655_460x_50c96ad1-ea02-45ae-8123-f61b74c7e4f6.webp?v=1765422602"},{"product_id":"j-t-header-saver","title":"J\u0026T Header Saver","description":"\u003cp\u003e\u003cspan\u003eThe J\u0026amp;T header saver is used to help extend the life of your expensive nitro header flange. The header saver is placed on the header flange and springs installed as normal, the springs will wear into the header saver instead of your header flange. Once the saver is worn out just replace.\u003c\/span\u003e\u003c\/p\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":52186850033969,"sku":null,"price":3.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom_20231123_101541_460x_ca7656e5-1bad-41cf-b357-1b975e13a229.webp?v=1765424448"},{"product_id":"j-t-torque-vented-clutch-bell-14t-4-shoe-copy","title":"J\u0026T Torque Vented Clutch Bell 14T (4 Shoe)","description":"\u003cp\u003eOut run em! Far to often everyone just sticks to a stock 13t, well the bigger the bell the higher the top speed... and smoother acceleration! The J\u0026amp;T Clutch bell 14t is hardened and precision machined for a direct and precise fit. Along with lasting performance this clutch bell is also vented and features a J\u0026amp;T laser logo.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits the J\u0026amp;T 4 Shoe Clutch and Protea 4 Shoe\u003c\/li\u003e\n\u003cli\u003efits 5x10x4 clutch bell bearings\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":52186917011761,"sku":null,"price":19.99,"currency_code":"USD","in_stock":true}]},{"product_id":"premium-titanium-clutch-screw-losi-tekno-style","title":"Premium Titanium Clutch Screw Losi\/Tekno Style","description":"\u003cp\u003eThe J\u0026amp;T Premium Titanium Clutch Screw is a thing of beauty! Along with the good looks comes a list of features that make this one of the most functional clutch screws on the market! This version has a shoulder built in for running with the stock Losi or Tekno clutch. We also adjusted to a lower profile head for fuel tank clearance. 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This exhaust system provides great throttle response and lots of mid to top-end power. The complete exhaust system includes EFFRA 2156 pipe, FP50 manifold, exhaust gasket, and springs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFP2500 Tuned Exhaust Features:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for use on all O.S. based nitro off-road engines.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDurable chrome finish.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDurable, forward facing welded pressure nipple.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaximum low-end performance\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mugen","offers":[{"title":"Default Title","offer_id":52292988338481,"sku":null,"price":145.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/FP2500__71642.jpg?v=1767756490"},{"product_id":"skyrc-itp380-infrared-thermometer","title":"SKYRC ITP380 Infrared Thermometer","description":"\u003cp\u003e\u003cb\u003eA must-have for RC hobbyists to track the temperatures.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eNow you can take temperature measurement at a safe distance with SkyRC ITP380. 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You will experience that engine pre-heating is a must with nitro motors, and most importantly, it will quickly pay for itself by increasing engine life and performance!\u003c\/p\u003e","brand":"Pit Stop Hobby","offers":[{"title":"Default Title","offer_id":52467740639537,"sku":null,"price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/heater_2.webp?v=1770243610"},{"product_id":"j-t-torque-4-shoe-clutch-replacement-spring-kit-jt11032-3","title":"J\u0026T Torque 4 Shoe Clutch Replacement Spring Kit JT11032-3","description":"\u003cp\u003eFits J\u0026amp;T 4 Shoe clutch system Includes 4 springs\u003c\/p\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":54204311372081,"sku":null,"price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom_20231214_134752_460x_589777fa-b179-4abf-875e-d932a0fc17fc.webp?v=1778711494"},{"product_id":"j-t-torque-4-shoe-clutch-replacement-spring-0-95-kit-jt11032-2","title":"J\u0026T Torque 4 Shoe Clutch Replacement Spring 0.95 Kit JT11032-2","description":"\u003cp\u003e0.95 springs Fits J\u0026amp;T 4 Shoe clutch system Includes 4 springs\u003c\/p\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":54204312879409,"sku":null,"price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom_20231214_134714_460x_ba8d818c-332d-477e-8044-2e0206a2eff7.webp?v=1778711814"},{"product_id":"j-t-torque-4-shoe-clutch-replacement-shoe-kit-aluminum-jt11030","title":"J\u0026T Torque 4 Shoe Clutch Replacement Shoe Kit (Aluminum) JT11030","description":"\u003cp\u003eOur Aluminum clutch shoes were designed in house and manufactured by 1Army here in the USA. Designed to help deliver solid power application with these shoes. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSold in a \"pair\"\u003c\/li\u003e\n\u003cli\u003eOur own in house design\u003c\/li\u003e\n\u003cli\u003eManufactured by 1Army in the USA\u003c\/li\u003e\n\u003cli\u003eMore power delivery with aluminum\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":54204326183217,"sku":null,"price":17.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom_20231214_132313_460x_a69bcf7f-0ff2-4b2b-a529-c28ea0097e4b.webp?v=1778712475"},{"product_id":"7x19x6-steel-engine-bearing-607-rs-jt10013","title":"7x19x6 Steel Engine Bearing 607-RS JT10013","description":"","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":54204334440753,"sku":null,"price":7.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom-20220621-123314_540x_846bf8ac-ad8d-4fd7-894c-67bcffcf0d37.webp?v=1778712869"},{"product_id":"7x19x6-ceramic-engine-bearing-607-rsc-jt10502","title":"7x19x6 Ceramic Engine Bearing 607-RSC JT10502","description":"\u003cp data-pm-slice=\"1 3 []\" class=\"\"\u003eJ\u0026amp;T Bearing's 7x19x6 Front Engine Bearing offers unbeatable performance for most .21\/.28 engines at a fair price. These bearings have single rubber seal that will placed facing outward, while the inside of the bearing will remain open for lubrication.\u003c\/p\u003e\n\u003cp class=\"\"\u003eFeatures\u003c\/p\u003e\n\u003cp class=\"\"\u003e \u003c\/p\u003e\n\u003cul data-rte-list=\"default\"\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eAbec 5 Quality\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eSi3N4 Ceramic Balls\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eGlass Fiber cage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eSingle rubber seal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":54204334965041,"sku":null,"price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom-20220621-125248_540x_8508c269-9062-465d-a07d-863959569fb5.webp?v=1778713117"},{"product_id":"tlr-and-tekno-style-j-t-bearing-co-air-filters-jt10681","title":"TLR and Tekno style J\u0026T Bearing Co Air Filters  JT10681","description":"\u003cp\u003e\u003cspan\u003eJ\u0026amp;T’s foam air filters available in 12 packs of pre-oiled air filters for the very popular TLR style filter housing. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThese filters are manufactured in Germany using proven methods to provide a high quality filter at a low price. These filters come oiled for convenience.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePro tip: Squeeze the excess oil out of the filter before installation using a blue paper towel.\u003c\/span\u003e\u003c\/p\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":54204343812401,"sku":null,"price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/Photoroom_20260323_132817_460x_61063261-46d8-4a4f-abee-79f2577fcb52.webp?v=1778713638"},{"product_id":"rc-clutch-shim-kit","title":"RC Clutch Shim Kit","description":"\u003cp\u003eGet the slop out\u003c\/p\u003e\n\u003cp data-pm-slice=\"1 3 []\" class=\"\"\u003eJ\u0026amp;T's new and improved stainless steel clutch bearing shim kit fits 5mm crankshafts which are used for all .12, .21, and .28 engines.\u003c\/p\u003e\n\u003ch2\u003eIncludes:\u003c\/h2\u003e\n\u003cul data-rte-list=\"default\"\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003e(5) 5x7x0.2mm Stainless Steel Shims\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003e(5) 5x7x0.5mm Stainless Steel Shims\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003ePacked in plastic hinge top container\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":54204347056433,"sku":null,"price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom-20220708-133031_540x_fb293748-0024-4746-a745-d283bae7176a.webp?v=1778713837"},{"product_id":"j-t-torque-vented-clutch-bell-2-0-13t-4-shoe-jt11036","title":"J\u0026T Torque Vented Clutch Bell 2.0 13T (4 Shoe) JT11036","description":"\u003cp\u003eThe J\u0026amp;T Clutch bell is hardened and precision machined for a direct and precise fit. Along with lasting performance this clutch bell is also vented and features a J\u0026amp;T laser logo.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits the J\u0026amp;T 4 Shoe Clutch and Protek style 4 shoe clutches\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":54204353642801,"sku":null,"price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/Photoroom_20260512_112030_460x_bb798e4b-b7b9-4e17-b67f-c6d010d51f56.webp?v=1778714241"},{"product_id":"j-t-torque-clutch-system-4-shoe-jt10856-jt11035","title":"J\u0026T Torque Clutch System 4 Shoe  JT10856\/ JT11035","description":"\u003cp\u003eThe J\u0026amp;T Torque Clutch systems have been developed for serious racers needing a competitive clutch at a reasonable price. Available in all aluminum shoes or 2 aluminum and 2 composite.\u003c\/p\u003e\n\u003cp\u003eSpring Colors:\u003c\/p\u003e\n\u003cp\u003e0.9- Gold\u003c\/p\u003e\n\u003cp\u003e1.0- Black\u003c\/p\u003e\n\u003cp\u003e1.1- Silver\u003c\/p\u003e\n\u003cp\u003eIncludes: Flywheel, Collet, Nut, 4 std aluminum shoes or 2 aluminum and 2 composite shoes, clutch pins, and four 0.9, 1.0 and 1.1 springs.\u003c\/p\u003e\n\u003cp\u003eTuning Tips:\u003c\/p\u003e\n\u003cp\u003eLighter springs will have a softer acceleration feel, while heavier spring will provide a harder acceleration feel. The composite shoes will provide a softer acceleration and the aluminum shoes will provide a harder acceleration.\u003c\/p\u003e\n\u003cp\u003eA good all around buggy spring and shoe set up will be 2 standard aluminum shoes with 1.0 spring and 2 composite shoes with 0.9 springs. You can tune to your liking from here.\u003c\/p\u003e\n\u003cp\u003eA good truggy set up will need to be more aggressive. We recommend 2 standard aluminum shoes with 1.0 springs and 2 hard aluminum shoes with 1.1 springs.\u003c\/p\u003e\n\u003cp\u003eInstallation Tips:\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eFirst install the collet on the engine while pulling forward on the crankshaft. Next install flywheel and nut. Tighten nut. Install the long portion of the clutch spring into the shoe and align on flywheel. Next you will insert the clutch shoe pin and repeat for all remaining shoes.\u003c\/p\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":54204356886833,"sku":null,"price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom_20231214_133831_460x_b0749304-f73a-4250-9f3f-0e249150cbd5.webp?v=1778714496"},{"product_id":"tkr5350-flywheel-4-shoe","title":"TKR5350 – Flywheel (4-shoe)","description":"","brand":"Tekno","offers":[{"title":"Default Title","offer_id":54671239020849,"sku":null,"price":20.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/TKR5350s-465x465.webp?v=1781922628"},{"product_id":"x-one-pipe-2143-torque-m-kit-3-5cc-buggy-s-series","title":"X-ONE PIPE 2143 TORQUE M KIT 3.5CC BUGGY, S SERIES","description":"\u003cdiv class=\"product-details product-details--layout-sidebar-right product-details--description-basic\" itemtype=\"http:\/\/schema.org\/Product\" itemscope=\"\"\u003e\n\u003cdiv class=\"product-details__description\"\u003e\n\u003cdiv class=\"product-details-module product-details__general-info\"\u003e\n\u003cdiv class=\"product-details-module__title ec-header-h6\"\u003eProduct Details\u003c\/div\u003e\n\u003cdiv class=\"product-details-module__content product-details-module__content--collapsed\"\u003e\n\u003cdiv class=\"product-details__product-attributes\"\u003e\n\u003cdiv class=\"details-product-attribute\"\u003e\n\u003cspan class=\"details-product-attribute__title\"\u003eUPC: \u003c\/span\u003e\u003cspan class=\"details-product-attribute__value\" itemprop=\"UPC\"\u003e761000967358\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"details-product-attribute\"\u003e\n\u003cspan class=\"details-product-attribute__title\"\u003eBrand: \u003c\/span\u003e\u003cspan class=\"details-product-attribute__value\" itemprop=\"brand\"\u003eREDS Racing\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"productDescription\" class=\"product-details__product-description\" itemprop=\"description\"\u003e\n\u003cp\u003eThe REDS X-ONE Torque 2143 One-Piece Off-Road Tuned Pipe for S Series engines combines the REDS 2143 Pipe and the REDS M Manifold to create this one-piece \"Torque\" exhaust. The X-ONE system is an innovative all-in-one pipe-manifold system. The pipe has been welded to the manifold to improve performance and fuel consumption. With X-ONE configuration there is no need for springs or gaskets, and the one piece design creates increased reliability and improved tuning stability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOnly compatible with S Line engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clearboth\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ec-related-products\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Reds","offers":[{"title":"Default Title","offer_id":54828787040561,"sku":null,"price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/5E9DF8D7-1044-45C9-9FDF-4AA68E90522C.webp?v=1782178371"},{"product_id":"o-s-speed-b2105-competition-21-nitro-engine-w-pipe-combo-osmg2161-copy","title":"O.S. Speed B2105 Competition .21 Nitro Engine w\/Pipe Combo OSMG2161","description":"\u003ch2\u003eEngine Overview:\u003c\/h2\u003e\n\u003cp\u003eThe O.S.SPEED B2105 Off-Road Buggy Engine is designed for competitive buggy racing, offering enhanced power and drivability. Manufactured by O.S. Engines, this engine boasts a redesigned cylinder and liner with three ports, delivering greater torque from mid to high-end. The black and silver anodized cooling head ensures efficient heat dissipation, while the DLC-coated crankshaft and revised internal shape optimize both power characteristics and ease of use compared to previous models.\u003c\/p\u003e\n\u003cp\u003eThe O.S.SPEED B2105 also incorporates a double-seal front bearing for improved durability and stability. Inherited from the B2104 crankcase, the engine features ceramic bearings and a specially treated thrust plate to reduce wear and enhance engine life. With a practical RPM range of 4,000 to 42,000, this engine offers smooth and linear power delivery for superior performance in off-road racing environments.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRedesigned cylinder and liner with three ports for improved torque\u003c\/li\u003e\n\u003cli\u003eBlack and silver anodized cooling head for efficient heat dissipation\u003c\/li\u003e\n\u003cli\u003eDLC-coated crankshaft with revised internal shape for better power delivery\u003c\/li\u003e\n\u003cli\u003eDouble-seal front bearing for increased durability and idle stability\u003c\/li\u003e\n\u003cli\u003eCeramic bearing in the crankcase for reliable performance\u003c\/li\u003e\n\u003cli\u003eSpecially treated thrust plate reduces friction wear for longer engine life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3.49 cc \/ 0.213 cu.in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.641 in. (16.27mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.661in. (16.80mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Power:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2.68 ps \/ 2.64 hp \/ 34,000 r.p.m.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical RPM Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4,000-42,000 r.p.m.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e12.28 oz. (348g)\u003c\/li\u003e\n\u003cli\u003e1\/8 Buggy Off-Road\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncludes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(1) B2105 Competition .21 Nitro Engine w\/Pipe Combo\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"O.S. Speed","offers":[{"title":"Default Title","offer_id":56246734618929,"sku":null,"price":749.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/osmg2161.jpg?v=1753493282"},{"product_id":"reds-racing-321-estremo-x-line-enbu0044-o-s-nitro-engine-21-buggy-truggy-761000974882","title":"REDS RACING 321 ESTREMO - X Line ENBU0044 O.S. Nitro Engine .21 Buggy Truggy 761000974882","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eReds Racing is enthusiastic to introduce an important evolution within its high-end off-road nitro engine lineup.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eAs part of this development, Reds Racing unveils a brand-new engine family called the X Line, which will run alongside the current flagship 721 Superveloce Gen5 – S Line Version 2026.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe development of the new 321 ESTREMO™ represents an important collaboration between REDS Racing and one of the most respected companies in the RC engine industry.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eREDS Racing was founded by Mario Rossi, one of the most influential figures in RC engine history and co-founder of the legendary Novarossi brand since 1984. His decades of experience in high-performance racing engine design have helped shape some of the most successful engines ever produced.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eBy combining REDS Racing’s Italian racing engineering and development philosophy with the manufacturing expertise and precision of Japanese engineering, this project brings together the best of two worlds.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe result of this collaboration is a new engine platform designed to deliver outstanding performance, reliability, and drivability—an engine that represents the perfect blend of Italian racing passion and Japanese manufacturing excellence.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eAdvanced 3-Port Engine Design\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eFrom a technical standpoint, the 321 features a 3-port configuration designed to deliver increased torque, resulting in a driving feel that differs significantly from the current 721 platform.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe cylinder and sleeve design has been developed starting from the classic Japanese 3-port architecture, well known for its simplicity, reliability, and strong torque characteristics. Reds Racing engineers further refined this concept by introducing additional internal flow channels designed to guide and optimize the air-fuel mixture movement inside the cylinder.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThese channels improve cylinder filling efficiency, enhancing the combustion process and increasing overall performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe cylinder is paired with an ultra-lightweight piston, specifically designed to reduce reciprocating mass. By minimizing the moving masses inside the engine, Reds Racing engineers were able to further improve engine responsiveness and maximize overall power output.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe result is a design that maintains the simplicity and drivability of a traditional 3-port engine, while incorporating advanced details that improve internal fluid dynamics and overall engine efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe new X Line debuts with the 321 ESTREMO™, a 3-port engine\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Reds","offers":[{"title":"Default Title","offer_id":56276932854065,"sku":null,"price":539.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/491C352B-C2EA-4875-B194-E9C601EB0367.jpg?v=1789439798"},{"product_id":"reds-clutch-tetra-x-adjustable-4-alu-shoes-d34-off-road-muqu0076-761000968041","title":"REDS CLUTCH TETRA-X ADJUSTABLE 4 ALU SHOES D34 OFF ROAD MUQU0076 761000968041","description":"\u003cp\u003eThe \u003cstrong\u003eREDS Racing Tetra-X EasyFit™ Clutch System\u003c\/strong\u003e is a cutting-edge solution, meticulously crafted to deliver superior performance, ease of use, and unparalleled durability. Designed to meet the needs of competitive racers, this clutch system ensures smooth, reliable power delivery, helping you achieve your best results on the track.\u003c\/p\u003e\n\u003ch3\u003eEasyFit™ Design – Tool-Free, Pre-Assembled Installation\u003c\/h3\u003e\n\u003cp\u003eOne of the standout features of the \u003cstrong\u003eREDS Racing Tetra-X\u003c\/strong\u003e Clutch System is its exceptionally user-friendly design. The clutch comes \u003cstrong\u003epre-assembled\u003c\/strong\u003e, eliminating the need for tools or complex procedures. Whether you’re at the track or in your garage, setting up the clutch is quick and hassle-free, allowing you to focus on what matters most—racing.\u003c\/p\u003e\n\u003cp\u003eWith \u003cstrong\u003ethree preload adjustment settings\u003c\/strong\u003eon the front plate—\u003cstrong\u003eHigh (H)\u003c\/strong\u003e, \u003cstrong\u003eMedium (M)\u003c\/strong\u003e, and \u003cstrong\u003eLow (L)\u003c\/strong\u003e—the clutch can be easily tuned to suit different track conditions and engine outputs. Additionally, the optional \u003cstrong\u003e1.1mm spring\u003c\/strong\u003efurther expands setup combinations, giving you the flexibility to perfectly match your driving style and track conditions.\u003c\/p\u003e\n\u003ch3\u003eEnhanced Durability for Longer Performance\u003c\/h3\u003e\n\u003cp\u003eDurability is at the core of the new \u003cstrong\u003eREDS Racing Clutch\u003c\/strong\u003e. Both the clutch shoes and clutch bell have been designed to withstand the intense demands of competitive racing. Made from high-quality materials, this clutch system offers extended lifespan and reduced need for maintenance, saving racers both time and money. Even in the harshest conditions, the clutch maintains consistent performance, making it a reliable choice for serious competitors.\u003c\/p\u003e\n\u003ch3\u003eSmooth, Controlled Power Delivery\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eREDS Racing Clutch\u003c\/strong\u003e provides a smooth and controlled power output, reminiscent of the classic \u003cstrong\u003eTetra REDS clutch\u003c\/strong\u003e. This ensures drivers enjoy responsive yet manageable acceleration, improving handling and overall track performance. The combination of familiar, reliable power delivery with advanced new features gives racers a competitive edge.\u003c\/p\u003e\n\u003ch3\u003eVersatile Models for Different Conditions\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eTetra-X™ Clutch\u003c\/strong\u003e comes in \u003cstrong\u003e34mm diameters\u003c\/strong\u003e, making it compatible with a variety of car models\u003c\/p\u003e\n\u003cp\u003e34mm for TEKNO, SWORKZ, Team Associated, Team Losi, Mugen, Agama.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum Flywheel\u003c\/strong\u003e: Offers medium inertia, making it suitable for all types of track layouts\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Reds","offers":[{"title":"Default Title","offer_id":56277039055153,"sku":null,"price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/05B800EA-CC2B-4705-9B18-102398D50ADF.jpg?v=1789440959"},{"product_id":"reds-racing-combo-321-estremo-x-line-with-2143-torque-xone-sku-cobu0037-761000974912","title":"REDS RACING COMBO 321 ESTREMO Nitro Engine- X Line - with 2143 TORQUE XONE PIPE COBU0037 761000974912","description":"\u003cp\u003eReds Racing is enthusiastic to introduce an important evolution within its high-end off-road nitro engine lineup.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eAs part of this development, Reds Racing unveils a brand-new engine family called the X Line, which will run alongside the current flagship 721 Superveloce Gen5 – S Line Version 2026.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe new X Line debuts with the 321 ESTREMO™, a 3-port engine designed to offer a different driving character compared to the well-known 721 S Line platform.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe 721 S Line will continue to be fully produced in Italy, maintaining the same philosophy, engineering approach, and performance characteristics that have defined it over the years.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe new 321 engine is manufactured in Japan and has been fully developed according to Reds Racing design, engineering, and testing specifications. Final assembly and tuning are carried out directly by Mario Rossi and Marco Rossi, ensuring the performance standards and precision expected from Reds Racing engines. \u003cstrong\u003e\u003cspan\u003eNot compatible with S Line Exhausts, manifolds, backplates, gaskets, piston\/sleeve\/conrod set and spring set.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eA Collaboration Between Two Icons of RC Engine Technology\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe development of the new 321 ESTREMO™ represents an important collaboration between REDS Racing and one of the most respected companies in the RC engine industry.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eREDS Racing was founded by Mario Rossi, one of the most influential figures in RC engine history and co-founder of the legendary Novarossi brand since 1984. His decades of experience in high-performance racing engine design have helped shape some of the most successful engines ever produced.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eBy combining REDS Racing’s Italian racing engineering and development philosophy with the manufacturing expertise and precision of Japanese engineering, this project brings together the best of two worlds.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe result of this collaboration is a new engine platform designed to deliver outstanding performance, reliability, and drivability—an engine that represents the perfect blend of Italian racing passion and Japanese manufacturing excellence.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eAdvanced 3-Port Engine Design\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eFrom a technical standpoint, the 321 features a 3-port configuration designed to deliver increased torque, resulting in a driving feel that differs significantly from the current 721 platform.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe cylinder and sleeve design has been developed starting from the classic Japanese 3-port architecture, well known for its simplicity, reliability, and strong torque characteristics. Reds Racing engineers further refined this concept by introducing additional internal flow channels designed to guide and optimize the air-fuel mixture movement inside the cylinder.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThese channels improve cylinder filling efficiency, enhancing the combustion process and increasing overall performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe cylinder is paired with an ultra-lightweight piston, specifically designed to reduce reciprocating mass. By minimizing the moving masses inside the engine, Reds Racing engineers were able to further improve engine responsiveness and maximize overall power output.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe result is a design that maintains the simplicity and drivability of a traditional 3-port engine, while incorporating advanced details that improve internal fluid dynamics and overall engine efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eOptimized Combustion Chambers\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eREDS Racing engineers also dedicated extensive development work to the combustion chamber design to guarantee consistent performance with different racing fuels.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eTwo dedicated combustion chamber configurations have been developed, allowing the engine to perform optimally with both 25–30% nitro fuel and 16% nitro fuel.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eEach combustion chamber has been specifically designed to perfectly match the characteristics of its respective fuel blend, ensuring the best balance of performance, reliability, and fuel efficiency under a wide range of racing conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eAirBoost™ Backplate\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eAnother key innovation featured on the new 321 engine is the REDS Racing AirBoost™ backplate, a true concentration of technology designed to further enhance engine performance and efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe AirBoost™ backplate has been engineered to increase mid-to-high RPM power, improve fuel efficiency, and provide a faster return to idle.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eIts internal design features two dedicated channels that direct the air-fuel mixture toward the rear section of the transfer ports, creating a supercharging effect that improves cylinder filling and significantly enhances engine power.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eIn addition, the AirBoost backplate is coated with a DLC (Diamond-Like Carbon) treatment, which reduces sliding friction between the connecting rod and the backplate. This advanced coating improves engine efficiency, reduces wear, and contributes to lower fuel consumption.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eEasy to Tune, Built to Win – 21J with Venturi XFlow™\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eTo guarantee extremely easy tuning and consistent performance on every track, the 321 ESTREMO features a carburetor based on the 21J, one of the most reliable and widely used carburetors in the RC racing world.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eREDS Racing engineers selected the proven 21J platform and further enhanced it with the Venturi XFlow™ system, designed to maximize airflow and improve carburetion stability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThanks to its Ultra Short design, the Venturi XFlow™ optimizes the air intake path and allows the engine to breathe more efficiently. This results in faster throttle response, easier carburetor tuning, and stronger overall engine performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe Venturi XFlow™ is available in three sizes to adapt the engine to different track conditions and racing preferences:\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003e6 mm – Maximum torque and improved fuel efficiency\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003e7 mm – Perfect balance between power and drivability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003e8 mm – Maximum airflow and top-end performance\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThis system ensures stable carburetion and precise throttle response, giving drivers the confidence needed to push the engine to its limits in any racing condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eREDS Ultra-Lightweight Cooling Head\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe REDS ultra-lightweight cooling head has been engineered to maximize heat dissipation while minimizing overall engine weight.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eIts optimized fin structure improves cooling efficiency and helps maintain stable engine temperatures even during demanding racing conditions, ensuring consistent performance during long finals and intense competition.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eExtreme Durability and Precision Engineering\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe new engine integrates several advanced durability improvements designed to maximize performance and reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eBoth the crankshaft and the backplate feature DLC (Diamond-Like Carbon) coating, a technology known for its exceptional hardness and extremely low friction coefficient.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThanks to this advanced treatment, the crankshaft durability can increase by up to three times compared to a conventional steel crankshaft, while also reducing internal engine friction.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe reduced friction between the connecting rod and backplate also helps extend conrod life by approximately 50%, improving long-term reliability during demanding racing conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe crankshaft features a double-balanced design, while its internal geometry has been revised to improve both power characteristics and engine smoothness.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe engine crankcase has been manufactured according to the highest quality standards, ensuring excellent rigidity, perfect component alignment, and maximum durability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eKey Technical Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003e3-port engine design focused on high torque output\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eAdvanced cylinder and sleeve design with optimized internal flow channels\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eUltra-lightweight piston to reduce reciprocating mass\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eREDS ultra-lightweight high-efficiency cooling head\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eAirBoost DLC-coated backplate for improved power and efficiency\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eDLC-coated crankshaft with double balancing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eCarburetor based on 21J design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eVenturi XFlow™ intake system available in 6, 7, and 8 mm sizes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eTwo dedicated combustion chambers for 16% and 25–30% nitro fuels\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan\u003eTwo Engines, Two Racing Philosophies\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eWith the introduction of the 321 ESTREMO, Reds Racing now offers two distinct engine platforms designed to suit different track conditions and driving styles.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eREDS 721 Superveloce\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003e7-port engine architecture\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eExceptional top-end speed\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eOutstanding fuel efficiency\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eExtremely smooth and linear power delivery\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"Q-E3F\"\u003eIdeal for high-speed tracks and European-style layouts\u003c\/span\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eREDS 321 ESTREMO\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003e3-port engine architecture\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eStrong bottom-end torque and acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eExcellent throttle response and drivability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"Q-E3F\"\u003eDesigned for technical tracks with big jumps\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"Q-E3F\"\u003eIdeal for American-style layouts and demanding off-road conditions\u003c\/span\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eTogether, the 721 Superveloce and the 321 ESTREMO give racers the possibility to choose the engine that best matches their track conditions, driving style, and racing strategy.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eWith the introduction of the X Line, Reds Racing expands its presence in the off-road racing segment, offering drivers a new engine platform designed to deliver a different performance philosophy alongside the established 721 S Line.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eThe 321 ESTREMO represents the perfect fusion of Italian racing engineering and Japanese manufacturing precision, setting a new benchmark for performance, drivability, and reliability in the world of off-road RC racing engines.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Category: 1\/8 Buggy and Truggy\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Displacement: 3.5 cm³\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Bore: 16.4 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Stroke: 16.4 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Inlet Ports: 3- Outlet Ports: 1\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Front Bearing: 7×19×6 with single high-performance seal\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Rear Bearing: 14×25.4×6 – 9 balls high-durability ceramic bearing\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Carburetor Type: VLX3-A aluminum long needle\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Venturi Diameter: 7.0 mm (optional venturi sizes: 6.0 mm and 8.0 mm – carburetor body 9.0 mm)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Backplate: AirBoost DLC-coated backplate\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Crankshaft: DLC-coated with two tungsten balancing weights\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Weight: 345 g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003e\u003cspan class=\"bHqri\"\u003eRecommended Accessories\u003c\/span\u003e\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003eTo maximize the performance of your 321 Estremo™ engine, Reds Racing recommends pairing it with the following components:\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Glow Plug: REDS TS3 or TS4\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Exhaust System: 2143 X-ONE X Line \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Clutch System: REDS TETRA-X Clutch System\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Fuel: 16–30% nitro with 8–10% oil\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e- Break-In Fuel: 12% oil\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan class=\"Q-E3F\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan class=\"Q-E3F\"\u003e\u003cstrong\u003e\u003cspan\u003eNot compatible with S Line Exhausts, manifolds, backplates, gaskets, piston\/sleeve\/conrod set and spring set.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Pit Stop Hobby","offers":[{"title":"Default Title","offer_id":56277146239281,"sku":null,"price":659.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/03CF2CB1-856F-4CD1-8C9A-B40CAE37B73A.webp?v=1789440463"},{"product_id":"reds-521-sport-nitro-engine-21","title":"REDS 521 SPORT NITRO ENGINE .21","description":"\u003cdiv class=\"product-details__product-attributes\"\u003e\n\u003cdiv class=\"details-product-attribute\"\u003e\n\u003cspan class=\"details-product-attribute__title\"\u003eBrand: \u003c\/span\u003e\u003cspan class=\"details-product-attribute__value\" itemprop=\"brand\"\u003eREDS Racing\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"productDescription\" class=\"product-details__product-description\" itemprop=\"description\"\u003e\n\u003cp\u003eThe REDS 521 Sport .21 Off-Road Competition Buggy Engine offers a balance of innovation, quality and performance at a mid range street price. The 521 Sport features technical changes in the 5 port sleeve, combined with updated materials to offer users high reliability, tuning stability and fuel mileage. The 521 Sport guarantees excellent performance at a reasonable price.\u003c\/p\u003e\n\u003cp\u003eIt is recommendable to match the engine with the REDS 2143 + M, or XONE Torque tuned pipe.\u003c\/p\u003e\n\u003cp\u003eFeatures:\u003c\/p\u003e\n\u003cp\u003e- ALUMINUM CARBURETOR: 521 Sport engine includes the same aluminum carburetor as 721 engines to guarantee reliability and tuning stability. The insulator bushing has been improved with aerospace grade ultra high strength polymer. Furthermore, the GEN2 carburetor features a double grub screw joint link to allow positioning and fitting with the any servo linkage system.\u003c\/p\u003e\n\u003cp\u003e- STATE OF THE ART DIE CASTING: The unique high stiffness crankcase design is produced with a high quality pressure die casting process and special aluminum alloy developed by REDS Racing engineers to guarantee higher stiffness and strength.\u003c\/p\u003e\n\u003cp\u003e- 5 PORT TECHNOLOGY: The piston and sleeve features updated materials. Thanks to updated 5 port technology, this engine provides really good fuel mileage and a smooth power band.\u003c\/p\u003e\n\u003cp\u003e- HANDMADE, TUNED AND ASSEMBLED: Every single engine is hand inspected and compression checked inside REDS Racing headquarters by Mario Rossi to achieve the highest quality standards.\u003c\/p\u003e\n\u003cp\u003eSpecifications:\u003c\/p\u003e\n\u003cp\u003eCategory: 1\/8 Buggy and Truggy\u003c\/p\u003e\n\u003cp\u003eDisplacement: 3.5cc\u003c\/p\u003e\n\u003cp\u003eBore: 16.2mm\u003c\/p\u003e\n\u003cp\u003eStroke: 16.9mm\u003c\/p\u003e\n\u003cp\u003eIntake ports: 5\u003c\/p\u003e\n\u003cp\u003eExhaust ports: 1\u003c\/p\u003e\n\u003cp\u003eFront Bearing: 7x19x6mm double rubber seal\u003c\/p\u003e\n\u003cp\u003eRear Bearing: 14x25.4x6mm steel or ceramic\u003c\/p\u003e\n\u003cp\u003eCarburetor Venturi: 7.0mm (6.0, 6.5, 7.5, 8.0 optional)\u003c\/p\u003e\n\u003cp\u003eCarburetor: VCX2-A Aluminum Short needle\u003c\/p\u003e\n\u003cp\u003eWeight: 345g\u003c\/p\u003e\n\u003cp\u003eFuel consumption: \u0026gt; 9:00 min\u003c\/p\u003e\n\u003cp\u003eEngine temperature: 110-130 degC\u003c\/p\u003e\n\u003cp\u003eRecommended Glow plug: REDS TS4\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Reds","offers":[{"title":"Default Title","offer_id":56277422833969,"sku":null,"price":439.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/4911AB5D-CDE2-4004-8EC3-EA5D9CC0D15F.jpg?v=1789441798"},{"product_id":"reds-racing-721-superveloce-gen5-nitro-engine-enbu0045-761000974790","title":"REDS RACING 721 SUPERVELOCE GEN5 NITRO ENGINE ENBU0045 761000974790","description":"\u003cp\u003e\u003cstrong\u003eREDS Racing\u003c\/strong\u003e is proud to introduce the \u003cstrong\u003e721 Superveloce™ GEN5\u003c\/strong\u003e, the most refined evolution of the Superveloce platform.\u003c\/p\u003e\n\u003cp\u003eThe GEN5 is the result of targeted development on internal fluid dynamics, crankshaft and cylinder timing, and the introduction of the new 9 mm carburetor, with a clear objective: increase power without increasing fuel consumption \u003cbr\u003ePerformance is higher, while fuel mileage remains exactly the same as the original Superveloce, a long-time benchmark for efficiency.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eKey GEN5 technical updates\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized internal fluid dynamics\u003c\/strong\u003e\u003cbr\u003eReworked internal flow paths improve air–fuel mixture quality and combustion stability. The result is smoother power delivery, faster throttle response, and extremely consistent performance over long runs 🏁.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRevised crankshaft and cylinder timing\u003c\/strong\u003e\u003cbr\u003eBoth crankshaft and port timing have been redesigned and optimized to:\u003c\/p\u003e\n\u003cp\u003eIncrease mid and high-RPM performance\u003cbr\u003eDeliver stronger top-end power\u003cbr\u003eMaintain excellent drivability\u003cbr\u003eKeep fuel consumption unchanged compared to the original Superveloce\u003c\/p\u003e\n\u003cp\u003eMore performance, same fuel mileage ✔️.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003cstrong\u003eNew 9 mm carburetor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe GEN5 introduces a new carburetor with 9 mm bore, designed to:\u003c\/p\u003e\n\u003cp\u003eIncrease overall engine performance\u003cbr\u003eMake tuning easier and more stable\u003cbr\u003eOffer a wider and more forgiving carburetion window\u003c\/p\u003e\n\u003cp\u003eIn practice, the engine is noticeably easier to set up and tune. Performance can be further optimized using larger venturi options, up to 8.5 or 9.0 mm, depending on track layout and conditions \u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eOne engine, two classes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 721 Superveloce GEN5 is designed to cover both Buggy and Truggy applications with a single engine platform simplifying choices for racers competing in multiple classes.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFull DLC configuration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 721 Superveloce GEN5 returns to a full DLC setup, featuring the Black Diamond DLC crankshaft combined with a traditional DLC backplate.\u003c\/p\u003e\n\u003cp\u003eThis solution guarantees excellent reliability, reduced friction, and more controlled costs, without compromising performance. The traditional DLC backplate has proven to be extremely robust and consistent in all racing conditions.\u003c\/p\u003e\n\u003cp\u003eThe RTX backplate remains an excellent optional upgrade for racers looking for a different power delivery feel or further fine-tuning, depending on track layout and driving style.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Reds","offers":[{"title":"Default Title","offer_id":56277582217521,"sku":null,"price":559.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/369E51AD-FF15-4A9A-A54A-5A14659DC0AA.jpg?v=1789442577"},{"product_id":"14x3-flat-top-titanium-socket-head-screw-packs-4pcs","title":"14X3 Flat Top Titanium Socket Head Screw Packs (4pcs)","description":"\u003cp\u003eThe J\u0026amp;T Flat Top Titanium line of screws are crafted for style and strength. Manufactured from \u003cspan\u003eGrade 5 6Al4V certified titanium these screw packs are a great way to choose where you would like to shed un-wanted weight on your rides, while making them look as great as possible. Our screws are NOT a generic screw anyone can just order, they have been designed in house with a unique design, and tight tolerances only available from J\u0026amp;T! \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMachined to our unique flat top design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncludes 4pcs per pack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMachined for 2.5mm \u003c\/span\u003eAllen wrench\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMultiple lengths available\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNatural Titanium and Oil Slick Titanium finishes available\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":56456615854385,"sku":null,"price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/Photoroom_20250313_161440_460x_230dc66c-07c1-4633-908a-95ed1baf8554.webp?v=1790284118"},{"product_id":"14x25-4x6-rear-ceramic-engine-bearing-mr25414c-jt10014","title":"14x25.4X6 Rear Ceramic Engine Bearing MR25414C JT10014","description":"\u003cp class=\"\"\u003eJ\u0026amp;T Bearing's 14x25.4x6 Rear Ceramic Engine Bearing offers unbeatable performance for your .21\/.28 engines at a fair price. These bearings are open to allow for proper lubrication. Our Vitro Ceramic bearings offer faster acceleration, more RPM's, less drag, lighter weight, and of course longer life over tradition steel bearings.\u003c\/p\u003e\n\u003cp class=\"\"\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eAbec 5 Quality\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eSi3N4 Ceramic Balls\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eGlass Fiber cage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"\"\u003eEngines Used In\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eO.S.: VZ-B, VZ-B V-Spec, VZ-B V-Spec Speed, \u0026amp; VZ-B V-Spec II WE\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eNovarossi: Plus 4 (2008), Plus 21-7T, P5 (Original), 421B, BS-21SB, \u0026amp; C5\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eAlpha\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eJammin\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eGo\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eNinja\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003ePicco\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003ePrecirotate: D5, PR21B, PR21BS, \u0026amp; PR21C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"\"\u003eTrinity Drake\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"J\u0026T","offers":[{"title":"Default Title","offer_id":56456913486129,"sku":null,"price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/files\/PhotoRoom-20220621-125320_460x_82c9e69f-07a0-452c-9ad5-ea351139ac9a.webp?v=1790290955"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/6266\/8337\/collections\/os-speed-b2105-ongaro-world-champion-edition-v3-combo_3.jpg?v=1756229287","url":"https:\/\/www.pitstophobby.com\/collections\/nitro-engines.oembed?page=3","provider":"Pit Stop Hobby","version":"1.0","type":"link"}