Cylinder Head Assembly - GY6 50cc Scooter - Version 10 108799 This one has a 12mm

This one has a 12mm ID bearing

This is a complete 1 piece fender

Fits the Tao Tao Targa 150 and Tonga 150 go-karts

Bolt holes on flange are 46

Known to fit a Magnum 150cc

Cylinder Head Assembly - GY6 50cc Scooter - Version 10 108799 This one has a 12mmScooter Cylinder Head Assembly 39mm 50cc Complete cylinder head assembly with valves and cam for GY6 50cc scooter engines. Fits many makes and models of scooter engines. Check pictures, specs and measurements for verification of the correct part. Head description: Overall height: 60mm Bottom hole distance valve side: 62mm Center and top hole distance valve side: 50mm Bottom hole distance spring side: 104mm Top hole distance spring side: 115mm Rocker