Press Release O.S. Max-R21 V2 .21 on-road nitro engine février 3, 2025 by Chris Laisser un commentaire Shopping! Wartelle Shop Shopping! RC Team Shopping! Absolute Hobbyz The following press release is from O.S. Engines: Introducing the O.S. Max-R21 V2 .21 on-road nitro engine, designed for entry level and sports users. Max-R21 Ver.2 is developed for 1/8th on-road racing with excellent cost performance that can be easily used in races for entry level to sports users. Crankshaft and carburetor have been revised from the previous model for more ease of use. Outer head is blue which is image color for Max series with new laser design. The O.S. Max-R21 V2 is available separately or as combo including EFRA2165 pipe and MR02 manifold. *Related: Moteur de Piste 1/8 O.S. Max-R21 Specifics: Displacement: 3.49cc / 0.213 cu.in. Bore: 16.08mm / 0.633in. Stroke: 17.20mm / 0.677in. Output: 2.75ps / 2.71hp / 32,000r.p.m. Practical RPM range: 4,000-44,000 r.p.m. Engine Weight: 350g / 12.35oz. See: O.S. Engines PartagezTweetez0 PartagesAbout ChrisFounder of circusrc.com, journalist & photographer in the RC world for several years, Chris is passionate about RC, racing and technique. Whether in France or in the world, he is trying to bring high-quality information and photos for enthusiasts... and make you want to join the world of RC!