Bolt on the Boyesen Quick Shot 2 Accelerator Pump Cover for the missing link your high performance dirt bike or ATV is missing. The Boyesen Quick Shot 2 will boost the fuel capacity into your carburetor by 25% over stock. The boost in fuel by the Quick Shot 2 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 the Quick Shot 2 will give. Running your bike to the limits adds heat which can cause stalling, but the Boyesen 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. The 2007 Honda CRF model houses a high volume check valve that manages fuel through a cartridge design for high sensitivity and instant acceleration.