Complete valve spring kit engineered for specific applications. Progressively wound, heat-treated and shot-peened springs supplied as a matched set for one engine. Made in the USA.
Active filters
Progressively wound racing valve springs. Complete set for one engine. Designed for specific cam and valvetrain requirements.
High chrome valve seats with 18%–22% chromium and 1%–2% nickel. Machined from solid bar stock and ground to exact tolerances. Made in the USA.
Precision-machined high chrome valve seats offering exceptional wear and corrosion resistance. Made in the USA.
High chrome valve seats with 18–22% chromium and 1–2% nickel. Machined from solid bar stock and finished to precise tolerances. Alternative to powder metal. Made in the USA.
Lightweight racing replacement with FEA-validated design and progressively wound, shot-peened springs. Made in the USA. Requires KPMI shortened M-8 valve guides or modified stock guides; check '23–'25 CVO valve lift for compatibility.
High-capacity hydraulic tappets developed for increased load, lubrication and service life; billet body and wider rollers.
4340 chromoly pushrods with solid adjustable tappets for aggressive cam profiles and high RPM; made in the U.S.A.
Precision-ground studs with radius-ground thread ends and hydraulically rolled threads for maximum strength and reduced notch sensitivity.
Quality replacement that meets or exceeds OEM specifications. Made in the U.S.A.
Kits include front and rear lifter blocks plus gaskets. Mounting screws sold separately; 53-65 models use 1/4"-24 screws. Made in the U.S.A.