COMP Cams Lifters 8993-16 Designed for standard GM block with SB2 heads with a .875" lifter bore, these .300 taller Endure-X 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. Endure-X Solid Roller Lifter Set for Chevrolet SB2 COMP Cams Endure-X Solid Roller Cutaway Lifters for GM SB2 Head, Standard Block Applications with .875" Lifter Bores and All Offsets, .300" Tall, Set of 16 COMP Cams ROLlr Lifter 875 Od Std Gm Bl