Bolt on the Boyesen Quick Shot 2 Accelerator Pump Cover for the missing link your high performance dirt bike or ATV is missing. The Quick Shot 2 will boost the fuel capacity into your carburetor by 25% over stock. The boost in fuel eliminates hesitation and bog when getting on the throttle. Boyesen engineered the Quick Shot 2 Accelerator Pump Cover with a high volume check valve. An important feature is the accelerated fuel delivery that only the Quick Shot 2 can handle. Improvement on the bottom end will be a noticeable advantage. Running your bike to the limits adds heat which can cause stalling, but the Quick Shot 2 will reduce the chances of a hot engine stall. Boyesen designed the Quick Shot 2 so it will fit all FCR Keihin carburetors.