Feuling Motor Company 4019 Race Series Hydraulic Roller Lifters 0.8435" Oversize M8

The Feuling Motor Company Race Series hydraulic roller lifters are precision-engineered performance components designed specifically for 2017-2019 Harley-Davidson Milwaukee-Eight engines. These full-travel hydraulic lifters feature an oversized 0.8435" outer diameter, making them ideal case savers when standard bore lifter bores have become worn or oversized.

Key Features:

• Machined from cold forged steel body for exceptional durability
• Precision ground needle roller bearing with high chromium steel axle for long life and minimal friction
• Designed to exceed the needs of large lift camshafts and higher valve spring pressures
• Slower bleed down rate maintains proper oil flow to valves, springs, rockers, shafts and valve guides
• Increases engine RPM and valvetrain stability while decreasing valve float for maximum valve lift
• Cold forged extra long piston, precision ground and fitted for controlled leak down and pump up
• High flow disc style quick reacting check valve for better reaction at higher RPM
• Oversized 0.8435" diameter provides ideal side clearance of 0.001"

Application Notes:

• Recommended for engines running higher than 185 lbs. valve spring seat pressure
• Compatible with Feuling HP+ or Race Series oil pumps
• Feuling recommends using a high volume oil pump for quieter, better performing lifters
• Suitable for both strip and performance street engines
• Spin-Tron dyno developed and track proven

Installation: Feuling recommends pumping up each lifter by hand prior to installation to remove all air and provide a fully pumped up lifter. Use of a thin weight oil like ATF in a squirt can works well for this procedure.

Sold in sets of 4. Made in the U.S.A.