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The COMP Cams GM LS OEM rocker arm trunnion upgrade kit converts stock LS rocker arms into captured trunnion assemblies for greater valve‑train stability. It uses captured roller bearings and billet trunnions to improve durability under high RPM and includes a magnetic installation tool for one‑handed fitting or press use. The kit increases lift capability over stock rockers and is a compact, budget-friendly upgrade.
COMP Cams GM LS OEM Rocker Arm Upgrade Kit & Installation Tool
