Fitment: Our this 4-Stroke Motor Short Case Engine only compatible with 150cc engine size two-wheeled scooters(Not suitable for go kart). Widely used in all kinds of two-wheeled scooter;without reverse gear, continuously variable. Transmission 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 This complete engine set includes carburetor, CDI, starter solenoid, coil,kick start lever. Without reverse gear, long axle, short box, it can be installed on the ATV, but you need to install an additional reverse gear. Product Description Specification: Model number: ??IP570QMJ Weight:28.18kg/62.13lb Engine oil type: SF15W-40 not come with oil. Cooling: air cooled Displacement: 150cc Short case Engine type: GY6 single cylinder 4-stroke Max power(kw/r/min): 6kw/7500r/min Rated power(kw/r/min): 5.2kw/7000r/min Max torque(n.m/r/min):7.6N.m/6500r/min Min specific fuel consumption: 367g/kw.h, allow add 10% Minimum no-load steady speed:1700+-170r/min Piston diameter:57.4mm/2.06″ Piston stroke: 57.8mm/2.28″ Cylinder volume:149.5ml Compression ratio: 9.2:1 Ignition system: CDI Transmission: CVT Start method: electric/kick Fuel Oil a) Gasoline trademark: Above RQ90 b) Engine oil trademark: crank shaft box SAE15W-40. Gearbox SAE90 c) Total volume for Engine oil: more than 0.9L for crank shaft box; more than 0.1L gear box Package included: 1x Set of complete engine Notice: Add engine oil before use??This machine is 10″ short case?? Mounting holes are located at the above of machine !