- 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.
Includes top and second compression rings plus three-piece oil control rings. Enough rings for two pistons; two rings per groove except rails. Made in the USA.
- Complete set: top, second, and oil control rings.
- Top rings barrel face; second rings reverse torsional taper.
- Three-piece oil rings with rails and expanders for positive oil control.
- Includes enough rings for two pistons; read piston instructions for end gap.
Complete replacement set with top, second, and three-piece oil control rings; includes enough rings for two pistons.
Complete set of top, second and oil control rings for two pistons; restores compression and improves oil control.
Complete set with top and second compression rings plus three-piece oil control rings; includes enough rings for two pistons.
Includes top and second compression rings plus three-piece oil control rings. Improves sealing, oil economy, and heat transfer. Includes rings for two pistons.