... cylinder, air cooled, 4 stroke Dirt bike Engine: 125/140cc, single cylinder, air cooled, 4 stroke Dirt bikeTransmission: Chain ... spoke,high strength steel rim,14"-2.5 tire front / 12"-3.0 rear Brake system: Front and rear Hydraulic disc ... : Front normal fork, rear mono shockDry weight: 70kg Dirt Bike 125/140cc kick start