Designed for an LSX/Warhawk Block GM applications, Solid Roller Lifters from COMP Cams are engineered to withstand the demands of aggressive cam lobe designs and increased rpm ranges. They feature a wear resistant tool steel axle, precision sorted needle bearings and EDM Oil Injection technology that guarantees the bearing assembly receives a constant flow of oil. Endure-X Solid Roller Lifters are heat treated, machined to ultra-high tolerances and fully rebuildable.