Designed for HD® Evolution OEM replacement. Machined from high‑grade metal with a corrosion‑resistant dark finish. Multipurpose alignment pins. Made in the USA.
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High-density powdered metal valve seats for superior wear resistance and thermal stability. Tested for track and street use.
Stellite-tipped nitrided valve for improved wear resistance, reduced friction, and corrosion protection. Made in the USA.
Precision C630 bronze valve guides with tapered nose design for improved flow and OEM fitment.
Precision-machined, compatible with no-lead fuel and all valve-stem materials; accepts special valve guide seals (sold separately); made in the USA.
Precision-machined cast iron construction; compatible with no-lead fuel; accepts special seals (sold separately); made in USA.
Precision cast-iron valve guide compatible with unleaded fuel; accepts special valve guide seals (sold separately).
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.
Special nitrided valve offering improved wear resistance, corrosion protection, and optimized flow.
High-performance fluoropolymer construction for extreme-temperature stability.
Twin spring design provides continuous tension for reliable sealing.
Added fillers reduce friction and extend service life.
Made in the USA.
Low-friction fluoropolymer valve guide seals with twin-spring tension and OEM-style durability.
Precision cast iron shouldered valve guide for reliable performance and compatibility with modern fuels.
Precision-machined cast iron shouldered valve guide. Compatible with unleaded fuel and multiple valve-stem materials. Seals sold separately. Made in USA.
Precision-machined valve guide compatible with no-lead fuel; seals sold separately.