Feuling HP+ Series Hydraulic Tappets - Std - 1999-2017 Twin Cam | 2017-2023 Milwaukee 8 | 2000-2020 Sportster Models

Performance hydraulic roller lifters dyno developed and track tested CNC-machined and precision ground When used with Feuling® oil pump, they will increase critical oil flow to valves, springs, rockers, shafts and valve guides Extend life of top end valve gear Can also be used for OEM replacements Sold in a set of four Made in the U.S.A. Manufacturer part number: 4000 Full travel lifter pre-load should bet set to 0.090" - 0.100" cold Specs:Style: HydraulicModel: HP+ Series®Size: Standard O.D. 0.8425"