O.S. Max-R21 3.5cc club-level nitro on-road engine
Available now from O.S. Engines is the Max-R21 3.5cc nitro on-road engine. The power plant is based on the championship heritage of the R2102 engine and delivers a perfect blend of power and value for 1/8th on-road racing. Its crankshaft and piston/liner are designed with premium performance and easy maintenance in mind, which makes it an ideal choice for beginners. This engine is upgradeable with high-performance O.S. Speed parts, letting drivers realise their full winning potential.
View lists of the features and specifications here