Dr, Performance Xtreme Cam Shaft Kit features custom CNC 8320 cold rolled material that has been flame hardened and heat treated for durability. The Dr. Performance Xtreme Billet Cam Shaft Kit includes cam bearings, .083 chrome moly push rods, rocker arm studs, dual 6000 RPM valve springs and titanium retainers.

Note:
Extensive professional machine work required to your head and block.
6000 RPM Valve Springs require machine work to spring pocket.