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.
Yamaha Super Jet(SJ650), Wave Jammer(WJ500), Wave Runner III(WRA650), XVR(WRB650) Top End Gasket Kit, 79mm Bore, .043" CFM-20 Cylinder Head Gasket
All of Cometic's gaskets and seals have been tested on both the street and the track as well as vigorous Dyno shakedowns
Cometic utlizes their in-house dynamometersand engine assembly rooms to ensure quality and reliability
Cometic 90-93 Yamaha SJ650 Super Jet 79mm Bore Top End Gasket Kit
Yamaha SJ650/WJ500/WRA650/WRB650 Top End Gasket Kit
Yama SJ650/WJ500/WRA650/WRB650 Top Kit
No Additional Sealer Needed
79mm Top End Gasket Kit
Top End Gasket Kit
Engine Top End Kit