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The COMP Cams Ultra Pro Magnum roller rocker arm is a stud-mount rocker with a 1.7 ratio and a 1/2" stud intended for Chevrolet 396-454 ci V8 big-block applications. Built for use with higher-stiffness 1/2" stud systems, this single rocker features robust construction to support heavy spring pressures. Confirm compatibility with your valve-train hardware and the COMP Cams Hi-Tech 1/2" stud kits where required.
COMP Cams Rocker Arm CB 1.7 1/2 Ultra Pro
