Specifications Fitment: Fits all air cooled Chinese mini moto models, mini quad, mini dirt bike, mini racing bike. Runs a 30-1 two stroke oil mix Features: 4+ horsepower Pull start / recoil Revs up to 12000 RPM 3000 RPM more than standard 49cc Comes with metal pull start with metal inner pawl, performance ignition coil, 49cc performance piston with ported windows, uprated clutch, lightened crank, performance high compression cylinder head with race plug and 6 tooth hardened clutch housing and pinion.