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The COMP Cams Ultra Pro Magnum XD rocker arm set is a stud-mount valvetrain upgrade specified for Chevrolet applications. These XD rockers are machined from 8650 steel with billet pushrod seat inserts, precision-sorted needle bearings and hardened roller tips. Fully rebuildable and compatible with most spring diameters and retainers, the set of eight is intended for Chevrolet 3/8" stud, 1.6 ratio applications.
COMP Cams Rockers CS 1.6 3/8in Ultra Pro
