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The COMP Cams Ultra Pro Magnum XD 1.65 ratio 7/16" stud rocker arm set is specified for Chevrolet 265–400 small-block engines. Machined from 8650 steel with billet pushrod seat inserts, these rebuildable rockers employ precision-sorted needle bearings and hardened roller tips to reduce wear and improve load distribution. They accept common spring diameters and retainers and handle elevated spring pressures reliably.
COMP Cams Rockers CS 1.65 7/16in Ultra Pro
