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Twin Cam/ Evolution/Shovelhead S&S Cycle & more......
Big Motors, Big Power
124", 120", 113 ", 107", 103", 98", 95"
Harley Davidson/ S&S Cycle/ HPI
43 mm to 70 mm & more.....
Dan Vance Racing has been providing performance options for Harley Davidson motorcycles for over 30 years. His extensive experience in drag racing, street mods, dyno tuning, cylinder head porting, throttle body porting & building big inch motors has provided him with the know-how to customize Harley Davidson & S&S engine modifications in all RPM ranges according to the way you like to ride.
CNC machining/EngineCase boring, Timken upgrade & more!