MX | ROADRACE | KARTING | MOPED
Tune your engine! Considerably increase your bike's mid to top range power with our VHM cylinder head, insert, 12° billet piston and crankshaft. Optimized In combination with our VHM ignition map from the CDI unit. We've also produced a superior, stronger than stock, lock washer for the starter intermediate gear to prevent engine failures.
This upgrade kit contains our 12 degree VHM piston, which can only be used in combination with our special insert for 12° piston.