Feuling Race Series Hydraulic Lifters For Harley Feuling Race Lifters are machined from a steel body and are designed with precision tolerances and a slower bleed down rate increasing valve-train stability when used with large camshafts and heavy valve spring pressure. Feuling Race Lifters are full travel hydraulics with big axles designed to decrease valve float and promote maximum valve lift Features: Full-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 valve train stability decreases valve float for maximum valve lift Recommended for both strip and performance street engines Sold in a set of four Made in the USA