OS SPEED R21GT II COMBO Tuned Rody

OS SPEED R21 GT II is an all-new 5-port engine. Tuned Rody

It features a newly developed piston and 5-port cylinder, crankshaft, crankcase, Specially made to fit on-road GT track. 
The OS SPEED R21 GT has a 7mm carburetor restrictor.

Tech specifications:

Displacement: 3.49 cc

Bore: 16.08mm

Stroke: 17.20mm

Intake ports: 5-port

Exhaust port: 3-port

Practical RPM range: 4,000 42,000 rpm

Max. power output: 2.65 ps / 2.61 hp / 34,000 rpm

Weight: 369Gr.

With tuned pipe T2060SC and 70mm manifold