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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.
EST top end gasket kit with embossed stainless steel head, base and rocker gaskets. Complete set of gaskets, seals, and O-rings to rebuild the top end. Made in the USA.
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.
Complete primary gasket kit with aluminum-core, nitrile-bonded gaskets; resists 205°F+, ~85% shape recovery; includes all gaskets, seals and O‑rings; made in USA; no sealer required.
Complete EST top-end gasket kit with embossed stainless steel gaskets and proprietary rubber covering. Includes all seals and O-rings for a full top-end rebuild. Made in the USA.
Precision cast iron shouldered valve guide for reliable performance and compatibility with modern fuels.
EST top-end gasket kit with embossed head, base, and rocker gaskets. Complete rebuild set with all gaskets, seals, and O-rings. Fits '99-'16 Twin Cam. Made in USA.
Precision-machined cast iron shouldered valve guide. Compatible with unleaded fuel and multiple valve-stem materials. Seals sold separately. Made in USA.