Precision-made at leading OEM factories in Japan. Produced to exact OEM specifications for reliable performance and long service life.
Active filters
Precision main bearing made to OEM specifications for reliable performance.
Stellite-tipped stainless-steel valve nitrided for improved wear resistance, corrosion protection, and reduced friction.
Designed for HD® Evolution OEM replacement. Machined from high‑grade metal with a corrosion‑resistant dark finish. Multipurpose alignment pins. Made in the USA.
High-density powdered metal valve seats for superior wear resistance and thermal stability. Tested for track and street use.
PTFE valve guide seals with twin-spring tension for reduced friction and reliable valve control. Made in USA.
- Precision-machined bronze construction for durability
- Tapered nose to reduce port obstruction and improve flow
- Compatible with unleaded fuel and a range of valve‑stem materials
- Accepts top‑hat valve seals (sold separately)
- Made in the USA
Precision-machined valve guide accepts special seals and works with no-lead fuel; made in the U.S.A.
Precision-machined cast iron construction; compatible with no-lead fuel; accepts special seals (sold separately); made in USA.
Precision machined valve keeper keys, split and heat treated for long-lasting performance. Made in the USA.
High-density powdered metal valve seats offering exceptional wear resistance and thermal performance; tested for track and street use.