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

The COMP CAMS BSR Shaft Rocker System Max-Lift GM LS1/LS2/LS6 is a high-performance rocker arm assembly engineered for serious LS-series engine builders and enthusiasts seeking maximum valve lift and duration control. This shaft-mounted rocker system is designed to replace factory rocker arms on GM LS-platform engines, offering the precision geometry and durability required for forced-induction builds, naturally aspirated performance upgrades, and competition-level engine combinations. Whether you're building a street performance engine or preparing for track duty, this rocker arm kit provides the foundation for aggressive cam profiles and extended valve events.

Built from hardened steel and finished in black nitride for corrosion resistance and durability, the BSR Shaft Rocker System features a 1.70 rocker ratio that multiplies cam lift across the entire RPM range without requiring valvetrain geometry compromise. The non-roller design provides consistent, predictable valve actuation while the shaft-mount configuration ensures proper alignment and load distribution across all eight cylinders. This engineering approach minimizes deflection under high-valve-spring pressures typical of modern LS builds with solid roller cams, allowing you to safely achieve higher lift values and faster ramp rates than factory rocker arms would permit.

The Max-Lift version serves builders who pair aggressive hydraulic roller or solid roller camshaft profiles with high-flow cylinder heads and optimized intake manifold packages. Installation requires engine disassembly to the rocker cover level and is best suited to experienced builders or professional machine shops with LS-engine expertise. The complete kit replaces all eight rocker arms and shafts, making it essential to verify your cam lift specifications and valve spring rates before ordering to ensure compatibility with your specific performance goals and existing engine components.