CHE Precision 4290; Chevrolet; Gen III/IV LS; Gen V LT; Trunnion Upgrade Kit

CHE Precision has helped developed of the most advanced high-performance trunnion replacement kits on the market today for LS1, LS2, LS3, LS6, LS7, LS9, the GEN5 LT1 and LT4 stock rockers.

The factory production LS/LT rocker arm is a lightweight proven design, but as valve spring pressures and valve lift increased it became necessary to find ways to improve upon the stock LS/LT rocker's reliability. By replacing the stock caged roller bearing assembly with CHE’s precision machined trunnion and proprietary bushing material, this unique design maintains the low-mass rotating weight of the stock LS rocker design while providing superior reliability for high RPM LS/LT race engines. If you are looking for a professionally engineered and track tested LS trunnion rocker arm replacement.