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Steel

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FEULING PARTS Hydraulic Roller Lifter Set - View 1

Product OverviewOEM Verified Specifications

Engineered to mitigate valve float and harmonics, this hydraulic roller lifter set features a revolutionary design with 0.115 inches of total travel, significantly less than the 0.200 inches found in full-travel lifters. This reduced travel minimizes the volume of oil required to fill the lifter, thereby preventing oil aeration on steep, fast-action high-lift camshaft lobes. By eliminating the pushrod seat drop associated with aerated oil, the system maintains a quiet engine while increasing RPM and promoting maximum valve lift. The components are machined from a steel body to withstand the demands of large lift camshafts and higher valve spring pressures, featuring a slower bleed-down rate for consistent performance.

Internal precision includes a ground needle roller bearing with a high-chromium steel axle for long life and minimal friction, paired with a high-flow disc-style quick-reacting check valve for superior reaction at higher RPM. These lifters are compatible with Feuling HP+ or Race Series oil pumps and are designed for both street and strip applications, with the Race Series specifically recommended for engines running higher than 185 lb valve spring seat pressure. Spin-Tron dyno developed and track proven, the set is made in the USA. For optimal installation, Feuling recommends manually pumping each lifter with a thin weight oil like ATF to remove air, and utilizing a high-volume oil pump to ensure quieter, better-performing operation.

Product Classification

Valvetrain Replacement ComponentHARD PARTS > Motorcycle Engine Mechanical & Internals > Valvetrain Components & Shims

Primary Material

Steel

Unit / Package Weight

1.2 lbs (0.54 kg)

Discipline & Application

Hard Parts & Mechanical

FEULING PARTS

FEULING PARTS Hydraulic Roller Lifter Set

MPN: 4057|DPN3: 0929-0091|SKU: 304057|UPC: Not Available|MMW: 0299950299950210002999|Fitment: Not Available

$299.95

Available

Select Fitment / Application: LIFTERS RS OVERSIZED OD 0.8435-0.844, +.0015 OD - 4057 (Part #0929-0091)

Proceed to Checkout

Free US ShippingOrders over $150

30-Day ExchangesHassle-free size swap

Manufacturer WarrantyStandard Manufacturer Warranty

FEULING PARTS Technical Performance & Engineering

Key engineered features, technical highlights, and manufacturer specifications

Authentic Specifications

Key Engineered Features (15)

OEM Technical Standards

New revolutionary design with 0.115" of total travel vs. a full travel lifter with 0.200"
Increases RPM by decreasing valve float and valve-train harmonics while maintaining a quiet engine
Travel reduction reduces the amount of oil that is required to fill the inside of the lifter which reduces oil aeration inside the lifter on steep, fast action high lift camshaft lobes
When oil aeration is present inside the lifter, the pushrod seat drops when the lifter rolls onto the front cam lobe ramp after squeezing the aeration down thus creating a noisy poor performing lifter
Short travel lifters should be set with 0.065" - 0.070" of pre-load and with the normal engine growth from heat will put the operating lifter pre load at or around half travel
Machined from a steel body and designed to exceed the needs of large lift camshafts and higher valve spring pressures with a slower bleed down rate
Compatible with either Feuling® HP+® or Race Series® oil pumps and are designed for use with both street and strip engines
Maintain proper oil flow to the top end, increase engine RPM, valve-train stability, decreasing valve float promoting maximum valve lift
Precision ground needle roller bearing with high chromium steel axle for long life and minimal friction
High-flow disc-style quick-reacting check valve for better reaction at higher RPM
Spin-Tron dyno developed and track proven
Made in the USA
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.
Feuling® recommends Race Series® lifters for engines running higher than 185 lb (84 kg) valve spring seat pressure.
Feuling® recommends the use of a high volume oil pump which will result in quieter, better performing lifters.

End of Product Information

Complete Your Setup

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Factory Technical Reference

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Verified Technical Reference

Frequently Asked Questions

Consult the authentic option and part number matrix under the Technical Specifications and Fitment tab. You can match the authentic OEM Manufacturer Part Number (MPN) or ride model specifications to confirm exact compatibility.

Steel

Photo 1 of 1 | Click to Enlarge

Product OverviewOEM Verified Specifications

Product Classification

Valvetrain Replacement ComponentHARD PARTS > Motorcycle Engine Mechanical & Internals > Valvetrain Components & Shims

Primary Material

Steel

Unit / Package Weight

1.2 lbs (0.54 kg)

Discipline & Application

Hard Parts & Mechanical

FEULING PARTS

FEULING PARTS Hydraulic Roller Lifter Set

MPN: 4057|DPN3: 0929-0091|SKU: 304057|UPC: Not Available|MMW: 0299950299950210002999|Fitment: Not Available

$299.95

Available

Select Fitment / Application: LIFTERS RS OVERSIZED OD 0.8435-0.844, +.0015 OD - 4057 (Part #0929-0091)

Proceed to Checkout

Free US ShippingOrders over $150

30-Day ExchangesHassle-free size swap

Manufacturer WarrantyStandard Manufacturer Warranty

FEULING PARTS Technical Performance & Engineering

Key engineered features, technical highlights, and manufacturer specifications

Authentic Specifications

Key Engineered Features (15)

OEM Technical Standards

New revolutionary design with 0.115" of total travel vs. a full travel lifter with 0.200"
Increases RPM by decreasing valve float and valve-train harmonics while maintaining a quiet engine
Travel reduction reduces the amount of oil that is required to fill the inside of the lifter which reduces oil aeration inside the lifter on steep, fast action high lift camshaft lobes
When oil aeration is present inside the lifter, the pushrod seat drops when the lifter rolls onto the front cam lobe ramp after squeezing the aeration down thus creating a noisy poor performing lifter
Short travel lifters should be set with 0.065" - 0.070" of pre-load and with the normal engine growth from heat will put the operating lifter pre load at or around half travel
Machined from a steel body and designed to exceed the needs of large lift camshafts and higher valve spring pressures with a slower bleed down rate
Compatible with either Feuling® HP+® or Race Series® oil pumps and are designed for use with both street and strip engines
Maintain proper oil flow to the top end, increase engine RPM, valve-train stability, decreasing valve float promoting maximum valve lift
Precision ground needle roller bearing with high chromium steel axle for long life and minimal friction
High-flow disc-style quick-reacting check valve for better reaction at higher RPM
Spin-Tron dyno developed and track proven
Made in the USA
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.
Feuling® recommends Race Series® lifters for engines running higher than 185 lb (84 kg) valve spring seat pressure.
Feuling® recommends the use of a high volume oil pump which will result in quieter, better performing lifters.

End of Product Information

Complete Your Setup

Frequently Paired Accessories & Tools

BOLT

BOLT Euro Style Chain Slider Bushings

BANKS

BANKS EXTREME HUSKY HAULER

SUPERCLAMP

SUPERCLAMP Super-Glides II

KOLPIN

KOLPIN Lock-It-Rite ATV/UTV Truck Receiver System

KOLPIN

KOLPIN Lock-It-Rite ATV/UTV Trailer System

SUPERCLAMP

SUPERCLAMP Super-Glide Edge Rail Trim Kit

SUPERCLAMP

SUPERCLAMP Super-Glides II Screw Kit

HELIX

HELIX 100 Pack Cable Ties - White

MPN
DPN1
SKU
UPC	Not Available
MMW
Package Shipping Weight	1.2 lbs
Shipping Box Dimensions	Not Available
Freight Classification Code	SFR
Size	+0.843" - 0.8435", 0.8420" - 0.8423"
Type	Hydraulic
Model	Hydraulic Roller Lifter Set
Style	Short-Travel
Packaging Units	Set of 4
Material	Steel
Warranty Coverage	Standard Manufacturer Warranty
Application	Exhaust, Intake
Model Series	Race Series®
Product Type	Lifter
Riding Discipline / Style	Street