The COMP Cams Ultra Pro Magnum XD Rocker Arms incorporate advanced FEA and CAD design to excel in endurance, circle track, and drag race applications. Integrating an 8650 steel construction, the Ultra Pro Magnum XD Rocker Arms are extremely resilient and will surely outlast other competitive brands both in terms of accuracy and strength. These rocker arms have precision-sorted needle bearings that are utilized to improve the distribution of load and to reduce wear for a longer service life.

The machined billet pushrod seat insert is made to suit a wide range of rocker ratios that are used in popular Chevy and Ford applications. They are fully rebuildable and would work efficiently with most diameter springs and retainers. Furthermore, the COMP Cams Ultra Pro Magnum XD Roller Rocker Arm comes in different configurations and a wide ratio range to suit a variety of engine specifics.

Since its establishment in 1976, Competitions Cams Inc., more famously known as COMP Cams has been an industry leader in the production of top quality valve train components. Prioritizing both the custom builder and the race enthusiast, COMP Cams' engineers incorporate only proven technology, efficient procedures and the most cutting edge equipment to produce their camshafts, rocker arms, valve lifters and other essential engine components. This is the same design process being utilized to develop reliable components for championship winning teams in international competitions like NASCAR and NHRA.

For more than three decades, COMP Cams has established a huge collection of standard setting camshafts and valve train solutions that emphasize outstanding performance on the track and the street. Adding to that, the company also offers free expert technical assistance to its customers to ensure they make the proper purchase for their specific application. With a passion to continuously improve, it's no wonder COMP Cams has been a household name for teams competing in the most prestigious circle track, drag racing, road race and off-road racing. Currently based in Memphis, Tennessee, COMP Cams continues to be a reliable brand by providing innovative and modern performance parts that never settle for second place.