O.S. Engines have introduced the Speed B21 Adam Drake Edition engine for both buggy and truggy classes. This new special edition engine features new cylinder liner design with new porting, new DLC crankshaft design with double tungsten counter weight, new bore x stroke (16.40 x 16.55 mm) designed according to Adam Drake’s advice and taste. The Adam Drake Edition engine features also 6.5mm and 8.0mm carburetor reducers, rear ceramic bearing and the 21J carburetor, the same as O.S. Speed Spec 2 and S. The Adam Drake Edition engine will become available separately and also as a combo package including T-2090SC exhaust and 85mm longer manifold in February.

See: O.S. Engines