Valve Train Kits For Big Twin

Weight (lbs): 2.58 Kits contain stainless steel Street Master valves, performance double spring assemblies, steel top collars and specially machined lower spring collars included in Shovelhead kits and machined keys perfectly matched for maximum performance Evolution kits include all of the above but are designed to be used with your existing lower collars Spring assemblies included require no cylinder head machining for installation Manley .550" Lift Kit Fits: Harley Big Twin Evolution all years Produces 180 pounds of seat pressure By: MANLEY PERFORMANCE