This is a Forged SBT Piston, compatible for all supercharged applications including : 185hp, 215hp, 255hp and the 260 hp. Our "standard" pistons are comparable to others premium pistons. SBT is so confident in the quality of our pistons that all pistons come with a LIFETIME warranty against manufacturers defect!Fits: 420890244Fits: 420892735The Piston Kit for Sea-Doo 4-TEC Supercharged Includes:PistonSet of Steel Rings,Cir-ClipsPiston Pin