- Precision-rolled threads for consistent torque and reduced galling.
 - Wide under-head flange for even load distribution and reliable sealing.
 - Tensile strength rated at 170,000 psi — stronger than OEM and grade 8.
 - Includes moly assembly lubricant; made in the USA.
 - Not for 2023 models with 121" VVT motors.
 
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.
Complete replacement motor sets for Big Twin engines, including side covers, timing plug, and front and rear mounts.
Includes cam, primary, oil hose cover and transmission side cover; made in the U.S.A.
Replacement bolt kit for cam cover—precise fit and easy installation.
Complete hardware set for lifter base installation. Made in the U.S.A.
Complete bolt kit for point cover; includes all necessary fasteners. Made in the U.S.A.
Precision-adjustable pushrods that improve valve-train stability and support high-lift cams and strong spring pressures.
Complete Big Twin motor set including side covers, lifter base timing plug, inner primary mount, tip, and front and rear motor mounts. Made in the U.S.A.