Kawasaki Gas Fuel Cap Zx6 Zx6e Zx6r Zx7 Zx7r Zx9 Zx11 R All you need are basic garage tools and seven mounting screws from the original gas cap. Made of ultra-light CNC machined billet aluminum! Standard Kawasaki Gas Caps weigh 14 oz, while Slingshot Racing Gas Caps weigh only 5.5 oz. This gas cap is ready for mounting as soon as you receive it (that means no additional parts). Because of the increased percentage of Ethanol in today's fuel, we recommend greasing the gas cap gasket with Silicon Based Grease before installation