Ultra-Pro Magnum Rocker Arms

Built from robust 8650 chromemoly material, their distinctive arched, web-like design provides superior strength and rigidity. This construction not only enhances durability but also reduces moment of inertia for improved dynamic balance. These rocker arms feature precision-sorted needle bearings, oversized trunions, and hardened roller tips, ensuring ultimate performance and dependability. The design specifically addresses retainer and valve spring clearances, accommodating most diameter springs, retainers, and +.050" locks without fitment complications. A black oxide exterior finish provides corrosion resistance and further boosts longevity. Designed for Chevy V6 engines from 1988 and later that utilize self-aligning rockers, these rocker arms have a 1.6 ratio and are intended for use with 3/8" studs. They are built to withstand up to 850 lbs of open spring pressure and come with a lifetime warranty against breakage. For those seeking enhanced valvetrain efficiency and durability, the Ultra-Pro Magnum series offers a significant upgrade over stock components, supporting higher RPM operation and providing a more reliable valvetrain foundation.