O.S. Engine - O.S. Speed R2105 Engine / TR02 Pipe Combo

To increase torque on high-grip track surfaces, a newly designed 9-port sleeve is adopted. O.S. SPEED's traditional DLC coated crankshaft delivers linear power from low to top by changing the counter balance. The outer head has been mirror finish and by clear coat from the conventional color to a silver head base has been adopted. By adopting a thrust plate made out of steel, wear due to interference between the connecting rod and the cover plate during rotation is reduced and engine life is improved.

Adopting the latest design to most part of the engine, it is finished with content suitable for the flagship of the O.S. SPEED on-road engine.

Bore: 0.633" (16 mm)

Cylinders: Single

Displacement: 3.49 cc / 0.213cu.in

Engine (Only) Weight: 0.76lbs (345g)

RPM Range: 4,000-45,000 r.p.m

Stroke: 17.20mm / 0.677 in