O.S. SPEED R21 EUROSPEC II Rody

New OS Speed R21 EUROSPEC II tuned by 'Rody'

Features:

• 1/8 on-road racing engine
• STEEL Main-Bearing for better torque.
• New Crankshaft with 3 tungsten weights.
• New sleeve/piston with extra lubrification holes at the lower exhaust side.

Specifications
Content: 3.49 cc 
Bore: 16.08mm  
Stroke: 17.20mm  
HP: 2.8 ps / 2.76 hp at 33000 r.p.m.
Practical range: 4000-45000 r.p.m.
Weight: 340g