{"product_id":"reds-521-competizione-s-line-3-5cc-21-off-road-nitro-engine-black-redenbu0046b","title":"REDS 521 Competizione S-Line 3.5cc (.21) Off-Road Nitro Engine (Black)","description":"\u003cp\u003eThe REDS 521 Competizione S-Line is a 3.5cc (.21) off-road nitro engine for 1\/8 off-road applications. It features a 5-port competition sleeve, VCX3-A aluminum 3-needle carburetor, steel crankshaft, and steel rear bearing. This black engine includes Pre Break in by Mario Rossi.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e5-port competition sleeve design\u003c\/li\u003e\n\u003cli\u003e3.5cc off-road nitro engine\u003c\/li\u003e\n\u003cli\u003e3-needle aluminum carburetor\u003c\/li\u003e\n\u003cli\u003eSteel crankshaft construction\u003c\/li\u003e\n\u003cli\u003eSteel rear bearing design\u003c\/li\u003e\n\u003cli\u003eHigh-stiffness die-cast crankcase\u003c\/li\u003e\n\u003cli\u003eSmooth power delivery characteristics\u003c\/li\u003e\n\u003cli\u003eImproved fuel efficiency\u003c\/li\u003e\n\u003cli\u003eEasy and stable tuning\u003c\/li\u003e\n\u003cli\u003ePre Break in by Mario Rossi\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e .21 cu.in (3.5cc)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Application:\u003c\/strong\u003e 1\/8 Off-Road\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore:\u003c\/strong\u003e 0.64in (16.2mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e 0.67in (16.9mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Ports:\u003c\/strong\u003e 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Ports:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburetor Type:\u003c\/strong\u003e VCX3-A Aluminum 3-Needle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlow Plug:\u003c\/strong\u003e REDS TS4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Fuel:\u003c\/strong\u003e 25–30% Nitro, 8–10% Oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreak-In Fuel:\u003c\/strong\u003e 12% Oil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 12.17oz (345g)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIncludes\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e521 Competizione S-Line 3.5cc (.21) Off-Road Nitro Engine with Pre Break in by Mario Rossi\u003c\/li\u003e\u003c\/ul\u003e","brand":"REDS","offers":[{"title":"Default Title","offer_id":46287002697962,"sku":"REDENBU0046B","price":389.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/9723\/1338\/files\/REDENBU0046B_01.jpg?v=1789961390","url":"https:\/\/swflrcr.com\/products\/reds-521-competizione-s-line-3-5cc-21-off-road-nitro-engine-black-redenbu0046b","provider":"SWFLRC Raceway","version":"1.0","type":"link"}