Black Cnc Kawasaki Gas Fuel Cap Ninja 500 500r Ex500 ZRX1100 ZX9RB ZX9RC a keyless Race Gas Cap Set (includes base & cap) for the right price! / Made of ultra-light CNC machined billet aluminum! Because of the increased percentage of Ethanol in today's fuel, we recommend greasing the gas cap gasket with Silicon Based Grease before installation 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). All you need are basic garage tools and seven mounting screws from the original gas cap.