BSR Shaft Rocker System Max-Lift GM LS1/LS2/LS6

The BSR Shaft Rocker System Max-Lift GM LS1/LS2/LS6 is a high-performance rocker arm assembly designed for LS-series engine builders and enthusiasts who demand maximum valve lift and duration control. This shaft-mounted rocker system replaces factory rocker arms on GM LS-platform engines, providing the precision and durability needed for both forced-induction builds and naturally aspirated performance upgrades.

Constructed from hardened steel and finished with black nitride for enhanced corrosion resistance, the BSR Shaft Rocker System features a 1.70 rocker ratio that effectively multiplies cam lift across the RPM range. This design ensures proper alignment and load distribution across all eight cylinders, minimizing deflection under high-valve-spring pressures typical of modern LS builds with solid roller cams.

Ideal for builders pairing aggressive hydraulic roller or solid roller camshaft profiles with compatible cylinder heads, this rocker arm kit lays the groundwork for aggressive cam profiles and extended valve events. Whether you're building a street performance engine or preparing for track duty, the BSR Shaft Rocker System is engineered to meet the demands of high-performance applications.