Feuling Race Lifters - +0.0015in 4052Full travel hydraulic lifters made from machined steel Exceeds the needs of large lift camshafts and higher spring pressures with a slower bleed down rate Maintains proper and critical oil flow to valves, springs, rockers, shafts and valve guides Increases engine RPM and valvetrain stability; decreases valve float for maximum valve lift Available in oversize diameters Recommended for both strip and performance street engines Sold in a set of four Made