125CC motorcycle engine Type: Single cylinder. 4-stroke. Air-cooled. Vertical. OHV Displacement: 124ml Compression Ratio: 9.1: 1: Bore X Stroke: Mm 56.5× 49.5 Roted Power&Rotating Speed: 7.0/(8500± 500) Max Torque&Rotating Speed: N. M/(r/min) ≥ 5.6/(6000± 500)Idling Speed: R/min 1500± 150 Min Fuel Consumption: G/kw. H ≤ 367 Ignition: CDI Starter: Electric&Kick Lubrication: Pressure Splash Transsmission: 5Speed Clutch: Manual. Coil clutch