88cc, Race Head, w/20mm Carburetor Kit. This will really wake up your stock engine and is comparable in power to the much larger Chinese 124cc engines!!! Includes the following: - Lightweight aluminum cylinder with steel sleeve - Cast in mounts on cylinder for aftermarket skid plates - Oversized cooling fins on cylinder for efficient heat dissipation - 52mm high compression piston with rings, pin, & clips,Head gasket kit - High performance race camshaft - Race Head – Large valves (25/22mm) and better flow for increased performance. Also has bigger cooling fins. Head Includes all necessary parts and comes assembled! The exhaust valve has been upgraded to stainless steel. - 20mm Performance carb assembly. Includes: 20mm carb, intake, heatstop, gaskets, mounting hardware/wrench, long adjustable throttle cable, and a air filter. Main jet kit is now included too!

We recommend purchasing a HD Oil Pump, larger front sprocket AND HD Clutch Kit (available in this section).