pingel brandstofklep hex 16 mm 6411 ahSUBSTANDIALLY HIGHER FUEL FLOW COMPARED TO OEM OR AFTERMARKET FUEL VALVE, NECESSAY FOR ADEQUATE FUEL DELIVEY EVEN ON STOCK MOTORCYCLES AND A MUST FOR HIGH PERFORMANCE, MADE IN THE US of the Fuel Valve Liver., 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 of Stiff Wire Into of Stiff