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COMP Cams Ultra Pro Magnum XD 1.55 ratio rocker arm is designed for Chevrolet 265–400 Small Block engines using 7/16" studs. It offers reliable valve motion and enhanced stiffness for drag, circle track and street use. Machined from 8650 steel with a billet pushrod seat insert, these rebuildable stud-mount rockers use precision-sorted needle bearings and hardened roller tips to spread load, reduce wear and tolerate high spring pressures.
COMP Cams Rockers CS 1.55 7/16in Ultra Pro
