The Tusk Complete Top End Rebuild kit includes everything you need to rebuild your top end. Kit includes a Tusk Top End Gasket kit along with a Standard Piston. Tusk Top End Gasket Kit. -Extreme strength for extreme conditions -ArmorPlatingâ„ piston coating -ArmorFitâ„ skirt coating -Protection from harmful detonation, improved ring seal -Perfect fit and conformability to your cylinder bore -Piston kit includes piston, rings, wristpin and circlips.