TOP END KIT CAST RACE 53.95/STD HUSQ/KTMAll piston skirts are coated with a high tech Molybdenum Disulfide coating for faster break in time and increased piston life Cast piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston All pistons are heat treated with a T 5 hardening and tempering cycle All rings are OEM replacements Top end piston kit includes piston, rings, pins, circlips, top end gaskets, and