... Head, Piston Pin Bore, Piston Pin, Skirt, Ring Grooves, Ring Lands and Piston Rings.Piston TypesSolid Skirt Pistons, Shim Type Pistons ... Drilling, Oil-cooling Channel, Three or Four Ring Grooves, Ceramic Spraying and Hard Iron Plating etc.AdvantagesAnti-high Temperature,No ... we will return the Postage and the Sample Charge.MOQ Piston 500-1000 pcs, Piston Ring 500-1000 sets, Cylinder liner ...