Overview

Top Street Performance Rocker Arm Trunnion Upgrade Kits

Upgrade your LS or LT valvetrain with Top Street Performance rocker arm trunnion upgrade kits, engineered to improve rocker arm stability, durability, and reliability in high-performance and rebuild applications. Designed to retrofit factory-style GM Gen III/IV LS and Gen V LT rocker arms, these kits replace worn OEM trunnion components with premium bronze bushing or needle-bearing designs that support smoother rocker movement, reduced wear, and enhanced valvetrain control under increased spring pressures and elevated engine speeds. Ideal for camshaft upgrades, performance street builds, and engine refresh projects, Top Street Performance trunnion upgrade kits help strengthen one of the LS/LT platform's most common weak points while maintaining OE fit and function for dependable performance when it matters most.

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