Z900/1000 APE VSP500 Valve Springs - For Cams with High Lift Up to 0.500 APE Adjustable Camshaft sprockets. Drag Specialties High Performance 3

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Z900/1000 APE VSP500 Valve Springs - For Cams with High Lift Up to 0.500 APE Adjustable Camshaft sprockets. Drag Specialties High Performance 3VSP500 Springs are designed to be used with Hi Lift Cams, typically Prostock or top gas with up to 0. 500" lift. World famous APE valve Springs are made from premiun chrome silicone wire for consistent pressure and excellent fatigue life. Racers as well as street riders have come to depend on APE Springs for winning performance. For use with any high lift cam and or agressive camshaft Profile.