Active filters
- Tensile strength 170,000 psi for superior performance.
 - Precision rolled threads and wide underhead flange for reliable sealing.
 - Includes moly assembly lubricant; made in the USA. Not for '23 models with 121" VVT motors.
 
- Precision-rolled threads for consistent torque
 - Wide underhead flange for improved sealing
 - 170,000 psi tensile strength; stronger than OEM and grade 8
 - Includes moly assembly lubricant; made in USA
 - Not for '23 models with 121" VVT motors
 
Direct bolt‑in Endurance Beehive® valve spring kit; up to 0.565" lift, includes seals, seats, shims and locks; fits 6.00 mm valve stems.
High Load Beehive® spring kit for V-Twin performance. Direct bolt-in up to 0.565" lift. Recommended for +0.540" lift camshafts. Includes retainers, seats, shims, locks and Viton® seals.
- Heat-treated chromoly ovate wire springs.
 - Hand measured and labeled for coil bind and open height.
 - Lightweight 7° steel or titanium retainers reduce valve weight.
 - Includes seats, shims, locks and Viton® seals with stem wipers.
 - Direct replacement for specified Harley-Davidson cams; up to 0.585" lift.
 
High-quality machined valve locks that secure the valve retainer to the valve stem and prevent valve drop.
Precision-adjustable pushrods that improve valve-train stability and support high-lift cams and strong spring pressures.
- Strength and rigidity second only to heavy-duty one-piece pushrods
 - Jam nut slides up the pushrod for quick access
 - Base loosens into the pushrod to allow Quick Install access
 - Individual length exhaust and intake pushrods for precise fit
 - Install without removal of rocker covers
 - Made in the USA
 - Requires pushrod tube kit sold separately
 - Correct adjustment requires fully pumped lifters; 7/16"-20 threads, 0.050" per turn
 
One-piece 3/8" 4130 chrome moly fixed-length pushrods with hardened ball ends. Maintains maximum valve lift and increases valve-train stability. Designed for larger-lift cams and high spring pressures. Requires removal of rocker covers and rocker arm supports. Made in the U.S.A.
- One-piece 4130 chrome moly construction with swedged ends.
 - Heavy-duty tube, precision concentricity, heat treated with a black oxide finish.
 - Works with hydraulic or solid lifters for street or race engines.
 - Designed for use with Feuling® stock and SE M8 camshafts.
 - Made in the USA; installation requires removal of rocker covers and rocker arms.
 
- Feuling recommended one-piece design to reduce valvetrain harmonics.
 - Fixed-length, swedged ends for consistent geometry.
 - Heavy-duty, heat-treated construction.
 - Made in the USA; removal of rocker covers and rocker arms required for installation.
 
Reduced 0.115" travel for higher RPM and decreased valve float.
Slower bleed-down and high-flow check valve for stable performance.
Precision bearings and steel construction; Spin-Tron developed and track proven.
Made in the U.S.A.; pump up lifters before installation and use a high-volume oil pump.