piston set 40mm 50cc aluminum cylinder for CPI SX 50, SM 50, Beeline Supercross, SMX 50

Piston kit for the original cylinder for CPI, Beeline and the aluminum cylinders with the item number 37369. The piston clearance is matched precisely to the aluminum cylinder and can not be used for cast iron cylinder from Minarelli AM motors, even if they are identical. Likewise a Minarelli AM6 piston for cast iron cylinder cannot be mounted on aluminum cylinders. Supplied as shown, including piston rings, gudgeon pins and retaining clips.