GY6 Big Bore 80cc 4-Stroke Short Case Engine 1P39QMB Scooter Peace Jonway Moped

IMPORTANT - Engine is Shipped without oil. DO NOT START ENGINE WITHOUT FILLING WITH OIL This is a Short Case Engine with Final Drive Shaft/Output Shaft for long version - GY6 50cc, 139QMB, QMB139 Scooters. Fits: This is a Short Case Engine with Final Drive Shaft/Output Shaft for long version - GY6 50cc, 139QMB, QMB139 Scooters with 10" Rear Wheel. Long gearbox output shaft for vehicles with a swinging arm on the right-hand side. Mounted through the swing arm. These models generally have twin rear shocks. Features CVT: CVT consist mainly of 2 transmission pulleys and 2 transmission belts. It's compact, simple design offers seamless shifting between an unlimited amount of varying gear ratios, allowing a smooth rate of acceleration. Crank Shaft: The engine is low speed with high torque and has large diameter bearings for crankshaft connecting rod, increasing the reliability of the bearings. Forced Air-cooled Engine: There are metal fins covering the outside of the cylinders and the heat generated by the engine is released directly into the air when the cooling fan blows air over fins. It has the advantages of simple structure, light weight, wide adaptability to climate change, rapid start up and no need of radiator. High-flow Oil Pump: Reduces the wear of friction pairs and prolongs the engine service life. Lubricating Oil Strainer: Helps removing solid contamination from lubricating oil, largely reducing the wear of friction pairs and prolonging the engine service life. Aluminum Cylinder Head & Body: Improves the heat dissipation capability, cuts the weight and increases the torque of the engine.