125cc 4-stroke Pit bikes Dirt Bike Engine Motor with Manual Transmission Kick Start 50cc 70cc 110cc 125cc Dirtbikes<br> UPGRADE A POWERFUL ENGINE FOR YOU BELOVED BIKE!!!! Engine Mode: ZS154FMI-3<br> Engine Name: BS125<br> Engine Type: Singlecylinder,4-stroke,air-cooling,horizontal<br> Displacement(ml): 123.7<br> Dimension(mm*mm*mm): 457x313x352<br> Net Weight(kg): 23.5<br> Max.Power(kw.r.min): 6.2.(8500+-5%)<br> Max.Torque (N.m.r.min): 8.5*(7500+-5%)<br> Compression Ratio: 9.3: 1<br> Bore and Stroke(mm*mm): 54*54<br> Ignition method: CDI<br> Lubrication method: Pressure and Splash <br> Min.Fuel Consumption(g|Kw.h): is equal or lesser than 367<br> Starting method: Kick<br> Clutch method: Manual Wet Multi-Plate<br> Gearshift Method: Constant mesh, two stage transmission,4-speed Gearshift<br> Chosen model: standard model<br> Applicable Motorcycle Type: Cub-type motorcycles, cross-country vehicle for children, ATV<br>