- Fits cast iron and aluminum valve-lifter blocks
- Billet bearing metal construction
- Hand fit hydraulic unit, .0002" running fit
- Recommended block clearance .0007"–.0012"
Active filters
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.
High-strength pinion shaft nut designed for secure gear-side installation and long service life.
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.
Replacement valve guide gasket for reliable sealing and easy installation.
Durable sealing gasket resists fuels and chemicals while maintaining a tight fit to prevent leaks.
Forged high-silicon aluminum piston kit with X-Ring package; includes rings, retainer clips and chrome piston pins. Made in the USA.
Complete top-end piston kit with X-Ring package for improved sealing and durability.
Forged high-silicon aluminum piston kit with X-Ring set, chrome piston pins and retainer clips; pistons made in the USA.
ArmorX™-coated pistons with ArmorFit™ skirt coating for smooth, quiet operation. Includes pistons, rings, pins and circlips. Made in the U.S.A.