Cylinder Head Assembly – 44mm, Big Bore, Pocket Bike, Blue / 20P8440BU
- 44mm ‘big bore’ cylinder & piston kit for pocket bike. 44mm big-bore kit for ’47cc’ chinese import pocketbikes with case reed inducted engine. For example, stock bore on the ’47cc’ engine is 40mm – meaning with the stock 32mm stroke, the engine size is actually approximately 40.2cc. This kit will increase your displacement to a much more powerful 48.7cc.