#OS1FG01 - O.S.SPEED R21 Shimo Edition 3 Racing Engine Combo

O.S.Engines would like to introduce all new O.S.SPEED R21 SHIMO EDITION 3. Latest collaboration engine with O.S. Team driver Takaaki Shimo.

On exhaust section on crank case, using spacer(s) that is provided, the engine will perform more linear from low to top end. Cylinder liner is now 9 port with new treatment of piston for longer life of the engine. The carburetor, to avoid fuel leakage and air in the line, it uses “Dust cover ring” to make the idle better and stable.

Specs:

• Displacement: 3.49 cc
• Bore: 16.08mm
• Stroke: 17.20mm
• Power: 2.80 ps / 2.76 hp @ 35.000 RPM
• Practical RPM range: 4.000-45.000
• Engine Weight: 347g

Included:

• TR03 EFRA2196 Exhaust pipe & MR05 Exhaust manifold
• Glow plug: T-RP7
• Reducer: φ8.5
• Exhaust seal ring
• Dust cap set: 12-30 (φ3、φ16、φ18)