Cometic’s line of powersports gaskets are sold both as kits and on an individual component basis. Gasket kits are broken down into three categories: EST Top End Kits (for 4-Stroke applications), 2-Stroke Top End Kits and 2 & 4-Stroke Bottom End Kits.Today's lightweight engines are producing more horsepower, higher cylinder pressure, clamp load and extreme temperatures. Our commitment is to provide innovative, quality gaskets while maximizing your engine’s power and performance. Cometic’s gaskets are proudly made in the USA with materials manufactured on American soil. We are constantly updating and adding models to our ever growing library of gaskets.