{"product_id":"os-speed-moteur-r21-gt-ii-3-5cc-s26537","title":"OS R21 GT II 3.5cc Motor S26537","description":"\u003cp\u003e🏁 \u003cstrong\u003eDiscover the O.S. SPEED R21 GT II engine\u003c\/strong\u003e, a benchmark in \u003cstrong\u003e1\/8 GT racing engines\u003c\/strong\u003e, designed to deliver \u003cstrong\u003epower, flexibility, and optimal performance\u003c\/strong\u003e. An evolution of the famous R21GT, this new generation significantly improves \u003cstrong\u003eperformance at low and mid-range RPMs\u003c\/strong\u003e, while maintaining excellent fuel efficiency. Ideal for demanding drivers, it guarantees \u003cstrong\u003ecrisp acceleration\u003c\/strong\u003e and \u003cstrong\u003eultra-precise engine response\u003c\/strong\u003e.\u003c\/p\u003e \u003ch3\u003e⚙️ Technical Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003eType\u003c\/strong\u003e: Nitro GT competition engine\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eDisplacement\u003c\/strong\u003e: \u003cstrong\u003e3.49 cc\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eBore\u003c\/strong\u003e: 16.08 mm\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eStroke\u003c\/strong\u003e: 17.20 mm\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003ePower\u003c\/strong\u003e: \u003cstrong\u003e2.65 ps \/ 2.61 hp at 34,000 rpm\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eOperating range\u003c\/strong\u003e: \u003cstrong\u003e4,000 to 42,000 rpm\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e: 362 g\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eCarburetor\u003c\/strong\u003e: Dual-adjustable \u003cstrong\u003e22E(B) GT\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eVenturi\u003c\/strong\u003e: 7.0 mm (AL2 red)\u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eDesign\u003c\/strong\u003e: \u003cul\u003e \u003cli\u003e5 scavenging ports\u003c\/li\u003e \u003cli\u003e3 exhaust ports (IFMAR standard)\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e🧩 Contents\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e1x \u003cstrong\u003eO.S. SPEED R21 GT II Motor\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003e1x \u003cstrong\u003eRP7 Spark Plug\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003e1x \u003cstrong\u003e7.0 mm venturi (RED AL2)\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003e1x \u003cstrong\u003eExhaust gasket\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003e1x \u003cstrong\u003eSet of dust caps\u003c\/strong\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e❗ Required\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003eGT 1\/8 compatible exhaust system\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003eSuitable fuel nitro\u003c\/li\u003e \u003cli\u003eAir filter\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e🎯 Who is it for?\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e1\/8 GT competition\u003c\/strong\u003e drivers \u003c\/li\u003e \u003cli\u003eUsers looking for \u003cstrong\u003epower and reliability\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003e\u003cstrong\u003eEngine\u003c\/strong\u003e enthusiasts \u003cstrong\u003eperformance Nitro\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003eIdeal for \u003cstrong\u003eOn-road intensive\u003c\/strong\u003e use \u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e🔄 Compatibility\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCompatible with \u003cstrong\u003e1\/8 GT\u003c\/strong\u003e chassis \u003cstrong\u003eNitro\u003c\/strong\u003e \u003c\/li\u003e \u003cli\u003eComplies with \u003cstrong\u003eIFMAR\u003c\/strong\u003e standards \u003c\/li\u003e \u003c\/ul\u003e","brand":"os","offers":[{"title":"Default Title","offer_id":51111253508381,"sku":"S26537","price":399.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2161\/5133\/files\/1_90e8beac-73e7-49fe-b47b-75317b954759.png?v=1775129300","url":"https:\/\/www.rcteam.com\/en\/products\/os-speed-moteur-r21-gt-ii-3-5cc-s26537","provider":"RC Team Modélisme","version":"1.0","type":"link"}