125CC 4-Speed Semi Auto Engine Motor Kit with Reverse For ATV Quad Bike Go Kart

125CC Electric Start Semi-Auto Motor Engine Kit W/ REVERSE For Go Kart ATV Quad Product function description: NOTE: Installation Manual Is NOT Included Professional Installation Is Highly Recommended Specifications: ENGINE SIZE : 125CC GEAR SYSTEM : 3 FORWARD; NEUTRAL; REVERSE Type : Horizontal, single-cylinder, 4-stroke, air-cooled Start Method : Electrical Start Bore x Stroke : 52.4 × 55.5 mm, 119.7 mL Top Engine Mount : 92mm Bottom Engine Mount: 82mm Bolt to Bolt :152mm (6) Compression ratio : 9.0: 1 Maximum net power/ rpm : 5.8 kw/ 7500r/ min±375 r/ min Maximum torque/ rpm : 8.5 N. M/5000r/min±250 r/min Idle speed : 1500 r/min±100r/min Front sprocket : 428-14T Ignition : CDI Air Filter : 35mm Carburetor : PZ19 Starter :Electrical Start.