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Raises valve spring retainer to gain 0.050" installed height without machining the cylinder head spring set. Made in the USA.
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.
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 fastener kit for cam covers and lifter blocks; includes hardware and moly assembly lubricant for proper installation.
Precision j-form threads resist galling and ensure consistent torque.
180,000 psi tensile strength outperforms OEM and grade 8 fasteners.
Includes all bolts for one motor and moly assembly lubricant; made in the USA.
Complete kit with all head bolts and moly lubricant. Precision j-form threads, 180,000 psi tensile strength, made in the USA. Fitment: For Evo/Twin Cam.
Comprehensive motor gasket kit featuring MLS head gaskets, Viton® seals, and AFM race-style exhaust gaskets. Built for reliable, leak-free performance.
High-quality Derby Cover Gasket engineered for long-term reliability and resistance to fuel-related degradation. Fits Derby covers.