{"product_id":"reds-moteur-buggy-21-321-estremo-world-edition-ligne-x-one-2143-redcobu0040","title":"Reds Engine Buggy .21 321 Estremo World Edition + X-One Line 2143 REDCOBU0040","description":"\u003cp\u003e🏁 \u003cstrong\u003eThe REDS Racing 321 Estremo Worlds Edition is a Nitro 3.5 cm³ engine and resonator set specially developed for 1\/8 off-road racing.\u003c\/strong\u003e Based on the 321 Estremo platform used during the 2026 racing season, this Worlds Edition combines a high-performance performance engine with a \u003cstrong\u003especialized cooling cylinder head\u003c\/strong\u003e and \u003cstrong\u003ethe REDS 2143 X-ONE Worlds Edition resonator with OXD surface treatment\u003c\/strong\u003e. The entire assembly was designed to promote consistent engine performance, particularly during extended races and in high-temperature conditions.\u003c\/p\u003e \u003ch3\u003e⚙️ Technical Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eBrand:\u003c\/strong\u003e REDS Racing\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eModel:\u003c\/strong\u003e 321 Estremo Worlds Edition\u003c\/li\u003e \u003cli\u003e Part \u003cstrong\u003eNumber:\u003c\/strong\u003e REDCOBU0040\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eType:\u003c\/strong\u003e Nitro Nitro 2-stroke engine\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eDisplacement:\u003c\/strong\u003e 3.5 cm³\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eCategory:\u003c\/strong\u003e Buggy and Truggy 1\/8 combustion engines\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eVersion:\u003c\/strong\u003e Worlds Edition 2026\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eBore:\u003c\/strong\u003e 16.4 mm\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eStroke:\u003c\/strong\u003e 16.4 mm\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eValve train:\u003c\/strong\u003e 3 intake ports and 1 exhaust port\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eEngine weight:\u003c\/strong\u003e 345 g\u003c\/li\u003e \u003cli\u003e Cylinder \u003cstrong\u003ehead:\u003c\/strong\u003e Worlds Edition, optimized for Nitro management\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eCrankshaft:\u003c\/strong\u003e DLC coating\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eBalancing:\u003c\/strong\u003e 2 tungsten weights\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eBearings\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eFront bearing:\u003c\/strong\u003e 7 x 19 x 6 mm, sealed design\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eRear bearing:\u003c\/strong\u003e 14 x 25.4 x 6 mm\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eRear Bearing Type:\u003c\/strong\u003e 9-ball ceramic\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eFuel system\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eCarburetor:\u003c\/strong\u003e OS 21J\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eSystem:\u003c\/strong\u003e XFlow Venturi\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eIncluded venturi:\u003c\/strong\u003e 7 mm\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eOptional venturis:\u003c\/strong\u003e 6 mm and 8 mm\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eResonator\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eModel:\u003c\/strong\u003e REDS 2143 X-ONE Worlds Edition\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eSeries:\u003c\/strong\u003e X Line\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eTreatment:\u003c\/strong\u003e OXD\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eFunction:\u003c\/strong\u003e Exhaust gas and temperature management\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eBenefit:\u003c\/strong\u003e Protection against wear and damage caused by high temperatures\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eRecommended settings and consumables\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eRecommended clutch:\u003c\/strong\u003e REDS TETRA-X\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eRecommended clutch configuration:\u003c\/strong\u003e 4 aluminum weights, Medium setting\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eRecommended spark plug:\u003c\/strong\u003e REDS TS3\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eRecommended fuel:\u003c\/strong\u003e 16–30% nitromethane\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eRecommended oil content:\u003c\/strong\u003e 8 to 10%\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e❄️ A Worlds Edition cylinder head for improved stability Nitro\u003c\/h3\u003e \u003cp\u003eThe \u003cstrong\u003eREDS 321 Estremo Worlds Edition\u003c\/strong\u003e features a cooling cylinder head specially developed for this version.\u003c\/p\u003e \u003cp\u003eIt was designed to improve engine temperature management, particularly during \u003cstrong\u003elong races or when outside temperatures are high\u003c\/strong\u003e.\u003c\/p\u003e \u003cp\u003eA more stable operating temperature offers several advantages:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eMore consistent fuel delivery\u003c\/strong\u003e during races.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eReduced temperature fluctuations\u003c\/strong\u003e during intensive use.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eMore consistent engine performance\u003c\/strong\u003e throughout the race.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eBetter temperature control\u003c\/strong\u003e under demanding racing conditions.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThis design aims to maintain smooth engine operation when thermal stresses become significant.\u003c\/p\u003e \u003ch3\u003e🔥 REDS 2143 X-ONE Worlds Edition Resonator with OXD treatment\u003c\/h3\u003e \u003cp\u003eThis kit includes \u003cstrong\u003ethe REDS 2143 X-ONE X Line Worlds Edition resonator\u003c\/strong\u003e, featuring an \u003cstrong\u003eOXD\u003c\/strong\u003e surface treatment.\u003c\/p\u003e \u003cp\u003eThis treatment was developed to improve the resonator’s resistance to the stresses encountered in competition.\u003c\/p\u003e \u003cp\u003eIn particular, it:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eProtect the resonator’s surface\u003c\/strong\u003e from wear.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eMinimize damage caused by high temperatures\u003c\/strong\u003e.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eImprove resistance to intensive use\u003c\/strong\u003e.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eContribute to exhaust gas management Nitro\u003c\/strong\u003e.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe combination of the 321 Estremo engine and the 2143 X-ONE Worlds Edition resonator is designed to meet the demands of 1\/8 off-road racing.\u003c\/p\u003e \u003ch3\u003e🧩 Contents\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e1 Nitro REDS Racing 321 Estremo Worlds Edition 3.5 cm³ engine\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003e1 resonator REDS 2143 X-ONE Worlds Edition with OXD treatment\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003e1 OS 21J carburetor with XFlow Venturi system\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003e1 7 mm venturi\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e🔄 Compatibility\u003c\/h3\u003e \u003cp\u003eThis set is designed for \u003cstrong\u003e1\/8-scale off-road RC cars with internal combustion engines\u003c\/strong\u003e, including:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003eBuggy 1\/8 Nitro\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eTruggy 1\/8 Nitro\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eBe sure to check that the engine mount and exhaust system are compatible with the chassis you are using.\u003c\/p\u003e \u003ch3\u003e🎯 Who is this for?\u003c\/h3\u003e \u003cp\u003eThe \u003cstrong\u003eREDS Racing 321 Estremo Worlds Edition with 2143 OXD resonator\u003c\/strong\u003e is designed \u003cstrong\u003efor buggy and truggy 1\/8 scale nitro models who compete\u003c\/strong\u003e and are looking for an engine capable of maintaining smooth operation under demanding conditions.\u003c\/p\u003e \u003cp\u003eWith its \u003cstrong\u003eWorlds Edition cylinder head\u003c\/strong\u003e, \u003cstrong\u003eOXD-treated resonator\u003c\/strong\u003e, \u003cstrong\u003eOS 21J XFlow carburetor\u003c\/strong\u003e, and competition-grade mechanical components, it provides a complete engine\/resonator package for preparing a vehicle for off-road racing.\u003c\/p\u003e","brand":"reds","offers":[{"title":"Default Title","offer_id":67834739523869,"sku":"REDCOBU0040","price":629.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2161\/5133\/files\/REDCOBU0041_1.webp?v=1792500127","url":"https:\/\/www.rcteam.com\/en\/products\/reds-moteur-buggy-21-321-estremo-world-edition-ligne-x-one-2143-redcobu0040","provider":"RC Team Modélisme","version":"1.0","type":"link"}