OS Speed R21 Euro Spec (On-road / #1C400)
This is developed for high-speed tracks, which require more top speed.///The piston and liner is newly designed.///Two holes in the piston contributes to reduce weight.///The liner is newly designed to increase top speed.///You will find the description below.///Displacement: 3.49cc(0.213cu.in.)///Bore: 16.08mm (0.633in.)///Stroke: 17.2mm (0.677in.)///practical rpm range: 4,000 - 45,000rpm///Max. output: 2.8ps(2.76hp)///weight 340g(11.99oz)
- Verbrenner