COMP Cams - LS3 BSR Rocker Shaft Set RHS ProCOMP Cams expands upon its Max Lift BSR Shaft Rocker Systems to include aftermarket LS3 style cylinder heads. This new bolt in, bushed shaft rocker system is specifically designed for aftermarket LS3 heads where valve geometry is different from the stock configuration. By tying all eight rockers onto a single shaft, the BSR Series of rockers improves valve train dynamics by increasing valve train stiffness. Replacing the high Hertz loading needle