Competition Cams 1823-8 Ultra Pro Magnum XD Roller Rocker Arms

Compatible with Chevrolet Big Block w/ 7/16" Stud;

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;