Comp Cams Ultra Pro Magnum XD Rocker Arm; Must use screw-in ExperiMental Designs Diameter:7/16"

Diameter:7/16"

Professional Installation is Recommended

Use your fingers to squeegee out the water

larger throttle body & mass air

Comp Cams Ultra Pro Magnum XD Rocker Arm; Must use screw-in ExperiMental Designs Diameter:7/16"The Ultra Pro Magnum" XD Rocker Arms are engineered from durable 8650 steel that outlasts and outperforms other inferior knock off and import rockers. A unique machined billet pushrod seat insert offers exceptional durability. These new stud mount rockers are fully rebuildable and use precision sorted needle bearings and hardened roller tips to better distribute the load and reduce wear for a longer service life. In addition, they work with most