... nodular iron,cast iron,steel,alloy,and etc(we can do as customer's request)5)surface ... treatment:polishing,plating,oxidation,phosphating,and etc(we can do as customer's request)6)packing ... cylinder liner's Diameter from 68 mm to 160 mm WE COULD SUPPLY PISTON , PISTON RING , LINER .BRAKE PADS,IGNITION ... you didn't find the product you want , We can manufacture the piston according to your sample or ...