Twin Shaft Mount Rocker Arm Set GM LS3/L98/LSA

The YELLA TERRA Twin Shaft Mount Rocker Arm Set (YT 6653) is a high-performance valvetrain component designed specifically for GM LS-series engines, including LS3, L98, and LSA platforms. This rocker arm set is ideal for automotive builders and enthusiasts looking to enhance engine performance in both street and track applications.

Constructed from high-quality aluminum, this rocker arm set features a 1.70 rocker ratio and a roller tip design that optimizes camshaft lift and valve opening distance. The roller tip minimizes friction at the valve stem, which helps reduce wear and improve thermal efficiency compared to traditional flat-tappet designs. The shaft mount architecture ensures superior stability and load distribution across the valvetrain assembly, making it suitable for aggressive cam profiles and forced-induction setups.

This rocker arm set is particularly beneficial for builders developing pro-street LS engines, where valvetrain reliability is crucial for consistent performance. Whether upgrading an LS3, L98, or LSA to accommodate increased cam lift or replacing worn stock arms, the YELLA TERRA shaft mount design offers significant improvements in valve timing accuracy and component longevity. It is essential to verify if any additional components are needed for complete installation.