OS Engines would like to introduce new OSSPEED B21 ADAM DRAKE 4. Latest collaboration engine with world famous OS Team driver Adam Drake. Cylinder liner, crankshaft, outer head has been redesigned to Adam Drake's spec for better balance, more torque and more power for better driving performance.
Spec--------------------------- Displacement: 3.49 cc / 0.213cu.in. Bore: 16.4mm / 0.646 in. Stroke: 16.55mm / 0.652 in. Output:2.65 ps / 2.61 hp / 34,000 rpm Practical RPM range: 4,000-42,000 rpm Engine Weight:352g / 12.42 oz.
Standard accessories-------------------------- OS SPEED P3 glow plug Reducer 6II (blue) AL2・Reducer 8mm (blue) AL Exhaust seal ring Dust cap set 3mm/16mm/18mm
