Dr, Performance Street Cam Shaft Kit for 1998.5 - 2009 Cummins engines enhances power, spool-up times and overall performance. The Dr. Performance Racing Cam Shaft Kit includes dual 4500 RPM valve springs with titanium retainers, a custom ground cam shaft, cam bearings, .083 chrome moly push rods, and rocker arm studs. This cam shaft is no factory "regrind", this is purpose built race cam that gives you the performance and reliability you can depend on.

Note:
Extensive professional machine work required to your head and block.