O.S. SPEED R2103 will offer you more low to mid-range torque, which eventually expands characteristic in torque and runs smoothly!
- 1/8 on-road racing engine
- STEEL Main-Bearing for better torque
- New Crankshaft
- New improved sleeve and underhead
- 3.49 cc
- 16.08 mm
- 17.20 mm
- 4,000-45,000 r.p.m.
- 2.8 ps/2.76 hp @ 33,000 rpm
- 340 g
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