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COMP Cams Ultra Pro Magnum XD 1.55 ratio rocker arm is a stud-mount valvetrain component for Chevrolet 265–400 Small Block applications using 3/8" studs. It delivers accurate valve motion and durability for endurance, drag and circle track use. Machined from 8650 steel with a billet pushrod seat insert, precision-sorted needle bearings and hardened roller tips, these rebuildable rockers accept most spring diameters and handle up to 1,000 lb spring pressure.
COMP Cams Rockers CS 1.55 3/8in Ultra Pro
