Scooterworks Big Bore Kit (63mm, 180cc); GY6 150

Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Installation of this kit may require you to bore the engine case in to make it fit. Engine case boring tool is availableNot legal for use in California on pollution controlled vehicles.Check local laws before installing.This product is not intended for use on public roads or land. CARB (CA Air Resource Bureau) Restricted, NOT FOR SALE IN CALIFORNIA)