Wood Performance has stepped up to the plate to design and produce another first! A very unique hydraulic roller lifter made exclusively for HD twin cam engines. The NEW Alpha Series lifters incorporate the new EDM technology, a patented pressurized oil system. In these new lifters, both sides of the lifter bearings are pressure fed by two oil ports spraying oil directly on the needle bearings.

• Knight Prowler “Directional” roller lifters are 100% American made.
• New Directional lifter body
• Full floating axle
• Load divider race
• Newly designed pushrod lifter cup
• Anti-pump up piston cup and check valve
• Repl OEM 18538-99C 18538-99B

Fits: 1999-2017 Harley Twin Cam Models & 2017 Harley M8 Milwakuee 8