Robotic & Radio Control Toys › O.S. Engines › Car & Truck Engines

The perfect balance between price and performance. The 21XZ-B Version II deliv... The perfect balance between price and performance. The 21XZ-B Version II delivers ideal performance at a reasonable price. It continues to exceed the expectations of even pro racers delivering power comparable to the Speed Spec II at a lower price.... more

Premium power entry-level ease. Club racers rejoice! The R21 engine delivers a... Premium power entry-level ease. Club racers rejoice! The R21 engine delivers an unbeatable blend of power and value for 1/8 on-road racing. Its crankshaft and piston/liner are designed with premium performance and easy maintenance in mind which makes... more

A performance boost for one of R/C s most popular trucks! Boost the 4WD perfor... A performance boost for one of R/C s most popular trucks! Boost the 4WD performance power in your Traxxas® Revo® with the 21TM engine from O.S.! It s the perfect upgrade for your monster masher — because it s a direct fit for Traxxas EZ-Start® or... more

Overview The O.S. SPEED R2104 is a factory tuned engine solely developed for 1... Overview The O.S. SPEED R2104 is a factory tuned engine solely developed for 1/8 racing competition. This new engine boasts 9-port piston liner to improve torque in low-middle power range. It also produces enough power as designed even for high... more

Overview MAX-12TG Ver.IV is a successor of MAX-12TG Ver. III. The new engine b... Overview MAX-12TG Ver.IV is a successor of MAX-12TG Ver. III. The new engine boasts the same connecting of OS SPEED T12 series which is more durable and racing specification. A crankcase and an outer head are newly designed. A refined piston enables... more