Honda RS125R
>
The Honda RS125R was a 125 cc two-stroke Grand Prix racing motorcycle manufactured by Honda Racing Corporation for racing purposes only.
It debuted in 1980, racing in the All Japan Road Race Championship. Wikipedia
Bore / stroke: 54 mm × 54.5 mm (2.13 in × 2.15 in)
Engine: 124.8 cc (7.62 cu in) two-stroke single
Power: 32.3 kW (43.3 hp) @ 12,250 rpm
Transmission: constant-mesh sequential manual