Precision roller assembly with larger outer rollers, smaller pin bearings for higher rpm, and an enlarged axle that eliminates internal movement. Made in the U.S.A.
Active filters
High-precision hydraulic tappets with micro-finish bore and oversized axle for improved cam tracking.
Performs like hydraulic to 5,500 rpm then becomes solid, adding ~3–6 hp and preventing hydraulic pump-up. Made in the U.S.A.; requires adjustable pushrods.
- Fits cast iron and aluminum valve-lifter blocks
- Billet bearing metal construction
- Hand fit hydraulic unit, .0002" running fit
- Recommended block clearance .0007"–.0012"
Reduce starting compression with easy-install manual release valves. Drill and tap each cylinder head 10 mm x 1.0 mm. Fits all Big Twin models.
Replacement component for Big Twin models; precision-machined to restore lubrication performance and reduce noise.
One-piece nitrided stainless-steel valve with stellite tip for superior wear resistance and reduced friction. Made in the USA.
One-piece Stellite-tipped nitrided valve delivering superior wear resistance, reduced friction, and optimized flow. Made in the USA.
High-strength pinion shaft nut designed for secure gear-side installation and long service life.
Nitrided valve with stellite tip for reduced wear and friction; compatible with leaded and unleaded fuels. Made in USA.
Stellite-tipped nitrided stainless-steel valve offering superior wear resistance, lightweight profile, excellent flow, and fuel compatibility.
One-piece nitrided stainless-steel valve with stellite tip for reduced wear and improved flow.
Compatible with leaded and unleaded fuels; made in the USA.
One-piece nitrided valve with stellite tip for improved wear resistance and reduced friction.
Lightweight profile, corrosion resistant, compatible with leaded and unleaded fuels.
Precision-made valve lock keys with a 10° lock angle. Heat-treated and made in the U.S.A. Designed for reliable valve keeper service.
Precision-machined valve guide compatible with no-lead fuel and multiple valve-stem materials. Made in the USA.
OEM replacement dowels for HD® Evolution engines that ensure precise cylinder alignment and reliable fitment.
Complete set of top, second, and oil control rings to restore sealing and oil control; includes rings for two pistons.
Complete set of top, second, and oil control rings for two pistons.
Barrel‑face top rings, Napier second rings, and three‑piece Flex Vent oil rings for reliable sealing and oil control.