6 tooth 25h sprocket with 3rd bearing support. Complete Performance 49cc Mini Moto Quadard Engine Upgrade FEATURES. 49cc single cylinder, air-cooled, 2-stroke. Performance flat slide carburetor, Heavy duty clutch, Alloy pull starter and HP carby kit. 49cc engine with anodized alloy head.This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Complete Engines". The seller is "cymotor2017" and is located in this country: US. This item can be shipped to United States.