Categories
- Audio & communication( 92 )
- Bike protection( 31 )
- Brakes
- Electrical( 82 )
- Engine
- Exhaust
- Fairings & body( 74 )
- Footrests & floorboards
- Frame & suspension( 507 )
- Fuel & air systems( 0 )
- Handlebars controls & mirrors( 562 )
- Lighting( 152 )
- Saddlebags & luggage( 54 )
- Seats( 914 )
- Sissy bars( 0 )
- Transmission & drivetrain( 163 )
- Wheels & accessories( 85 )
- All collections
Feuling Parts Race Series Oversized M8 Lifters – Part Number 4019ST
Regular price $319.95 USD
Category:
Lifters - Race Series® - Oversized - M8
The Feuling Parts Race Series Oversized M8 Lifters (Part Number 4019ST) are engineered to enhance high-performance engine operation. Featuring a revolutionary design, these lifters offer a total travel of just 0.115 inches, significantly less than conventional full-travel lifters that typically provide around 0.200 inches. This reduction in travel increases engine RPM by decreasing valve float and harmonics in the valve train, resulting in a more stable and responsive performance while maintaining a quiet operation. The reduced travel also minimizes oil requirements to fill the lifter, decreasing oil aeration which can cause noisy and inefficient lifter operation during high-speed, high-lift camshaft activity. Proper setup involves pre-loading the lifters with approximately 0.065 to 0.070 inches and accounting for thermal expansion during engine operation, aiming for a half-travel preload for optimal performance. Machined from durable steel, these lifters are designed to withstand large lift camshafts and higher valve spring pressures, with a slower bleed-down rate to ensure consistent performance under demanding conditions. They are compatible with Feuling® HP+® or Race Series® oil pumps and suitable for both street and strip engines. The precision ground needle roller bearing with a high chromium steel axle ensures long life and minimal friction, while the high-flow disc-style check valve provides quick reaction at higher RPMs. Developed on a Spin-Tron dyno and proven on track, these lifters are made in the USA and are recommended to be pumped prior to installation to remove air, using a thin oil like automatic transmission fluid (ATF) for best results. For engines running valve spring pressures above 185 pounds, Feuling® recommends using Race Series® lifters and a high-volume oil pump for quieter, more reliable operation. Proper installation and maintenance of these lifters will maximize valve lift, enhance valve-train stability, and promote higher RPM capabilities, making them an excellent choice for performance enthusiasts seeking durability and efficiency.
Features:
- Revolutionary design with 0.115 inches of total travel for increased RPM and valve-train stability
- Reduces oil aeration and noise during high-speed operation
- Machined from high-strength steel for durability under high lift and spring pressures
- Compatible with Feuling HP+ and Race Series oil pumps for optimal oil flow
- Precision ground needle roller bearing with high chromium steel axle for longevity and minimal friction
- High-flow disc-style check valve for quick response at high RPM
- Designed for both street and strip engines with high valve spring pressures
- Requires pre-installation pumping to remove air, recommended to use thin oil such as ATF
- Made in the USA, track proven and dyno developed for reliable performance





