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COMP Cams Ultra Pro Magnum roller rocker arm, 1.6 ratio with 3/8" stud, is built from 8650 chromemoly steel with a black oxide coating to resist corrosion. Designed for Chevrolet Small Block and V6 applications, it features oversized trunnions, precision‑sorted needle bearings and hardened roller tips to withstand high spring pressures and provide reliable valve‑train operation.
COMP Cams Rocker Arm CS 1.6 3/8 Ultra Pro
