Rock Trunnion Kit

The CHE Precision 4290 LS & LT Pedestal Mount Rocker Trunnion Kit is an upgrade designed to enhance the reliability of factory LS rocker arms, particularly under increased valve spring pressures and higher valve lift. Developed in collaboration with engine builders, this kit replaces the stock caged roller bearing assembly with CHE's precision-machined trunnion and proprietary bushing material. This design innovation preserves the low-mass rotating weight characteristic of the stock LS rocker while offering significantly improved durability for high-RPM race engine applications. It is compatible with LS1, LS2, LS3, LS6, LS7, LS9, GEN5 LT1, LT4, L83, L84, L86, and L87 applications.