COMP Cams 853-12 - Lifters,CS Retro-Fit HYD RLR Full Travel

COMP Cams Retro-Fit Hydraulic Roller Lifters for Small Block Chevy Non-Roller Engines, 6 Pairs COMP Cams Hydraulic Roller Lifters are a performance upgrade for stock Hydraulic Roller lifters or retro-fit Hydraulic Roller lifters for non-roller blocks. The roller wheel decreases friction and increases longevity when compared to flat tappet lifters. Hydraulic Roller lifters can handle much more aggressive cam profiles than flat tappets unlocking performance potential. For Small Block Chevy; .842? diameter; 136g weight; 2.49? seat height; Performance replacement for stock Hydraulic Roller lifters or retro-fit Hydraulic Roller lifters for non-roller blocks; Decrease friction and increase longevity when directly compared to flat tappet lifters; Accept much more aggressive cam profiles than flat tappet lifters will allow