Cometic C7397 53mm Bore Hi-Compression Top End Gasket Kit Fits: Kawasaki KX100 1998-2001 with a 53mm Bore Hi-Compression Gasket Kit uses thinner gaskets for a bump in compression and an increase in performance Today's lightweight engines are producing more horsepower, higher cylinder pressure, clamp load and extreme temperatures Cometic's commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance Supplied with the necessary gaskets for a complete top end rebuild, installation from a certified mechanic is highly recommended as engine damage may result if the engine is not properly tuned