NCY 158cc Big Bore Cylinder Kit for Yamaha Zuma 125NCY Yamaha Zuma 125 59mm Cast Iron Cylinder w/o headGive your Yamaha Zuma 125 some extra kick with this bolt on 158cc big bore kit. Don’t forget that unlike most scooters, the Yamaha Zuma 125 is a Fuel Injected Scooter, and in order to get this cylinder kit to perform properly, you must purchase a Fuel Injection Module. We recommend the Two Brothers Juice Box. **NOTE: Not legal for use in California on pollution controlled vehicles. Check local laws before installing.****