
O.S.SPEED R21 EURO II - ON-ROAD PERFORMANCE for EUROPE!
This engine inherits the smooth and easy-to-use feeling of the predecessor, O.S. SPEED R21 EURO Spec. And by reviewing the counterbalance of the crankshaft, low and mid end power delivery has been improved. The smooth RPM drop and idling stability are also improved, and the optimum performance is demonstrated even in the long and harsh race scene. Succeeding the previous model, every part has been improved including the outer head with new design to improve the cooling performance.
Specs:
Displacement: 3.49cc
Bore: 16.08mm
Stroke: 17.20mm
Output: 2.76hp @ 35.000RPM
Practical RPM range: 4.000-45.000
Weight: 340g
Standard accessories:
Glow plug RP7
Exhaust seal ring
Dust cap set (3, 16 & 18mm)