High-performance fuel valves unequaled for over 30 yearsSubstantially higher fuel flow than any aftermarket fuel valveSome models will require an adapter plate (available separately); see chart belowFor models requiring an adapter plate that is not listed, use the blank style and drill the mounting holes needed in the adapter plateThe GSX-R valve does not have a provision for reserveMade in the U.S.A.NOTE: HOW TO MEASURE YOUR BOLT PATTERN: If you don't have a measuring instrument such as a dial caliper to measure the center to center bolt distance on your stock fuel valve, try this method: bend a piece of stiff wire into a horseshoe shape and center the ends from bolt to bolt. Then transfer that measurement to a ruler.