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Procomp extruded aluminum and stainless steel shaft mount rocker system includes steel shafts with pedestals. This is the ultimate set-up for roller rockers. All rockers feature large needle bearings and roller tips. Rockers are lightweight 6061 aluminum with full roller needle bearing fulcrum and roller tips for low friction. Rated for up to 750 PSI spring loads. Extra clearance to allow larger springs and retainers. Can be used with hydraulic or solid lifters. These rocker arms are designed for less friction, more accurate valve adjustment, extreme rigidity, and increased RPM potential.  | 
