
Manufacturer's ref: 4017 — Race Series® hydraulic lifters FEULING PARTS
Designed for performance-oriented engines, these full travel hydraulic lifters are machined from steel and offer a lift of .200". Their design ensures critical oil flow to valves, springs, rockers, shafts, and guides, with a slower bleed rate suitable for high-lift camshafts and stressed springs.
Ideal for big twin builds and compatible with many modern Harleys (e.g. FXLRST, FXLRS, FXBR 1923cc depending on setups). Designed for riders and builders demanding reliability and high RPM performance without promising unmeasured effects.