Cometic 06 17 Honda CRF150F 62mm Bore Top End Gasket Kit Local Weather Forecast, News and Conditions Weather Underground. Today's lightweight engines are producing more horsepower, higher cylinder pressures, clamp loads 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 for Powersports, Street Bikes, Snowmobiles, Harley Davidson and V Twin applications.