Complete Race Series conversion kit to replace early 1999–2006 mechanical spring cam chain tensioners with the late 2007–2017 hydraulic system; includes pump, lifters, housings, chains, sprockets and hardware.
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Complete conversion kit to upgrade early mechanical cam chain systems to hydraulic-style operation; includes pump, full-travel lifters, chains, sprockets and hardware.
Increases oil pressure and volume for cooler, quieter engine operation; bench-tested relief valve; reduces wet sumping and blow-by.
Stellite-tipped stainless-steel valve nitrided for improved wear resistance, corrosion protection, and reduced friction.
Stellite-tipped nitrided valve for improved wear resistance, reduced friction, and corrosion protection. Made in the USA.
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.
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).