Fits 124" and 128" big-bore motors with head work. Made in the U.S.A. Requires hi-lift springs.
Active filters
- Made to exact tolerances for OE-style fit and wear.
- Made in the USA.
- Does not include oil hole(s); must be drilled after installation.
Made to exact tolerances for OE-style fitment. Made in the USA. Does not include oil hole(s); holes must be drilled after installation.
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.
Proven N2 cam profile; runs to 6500 rpm with stock hydraulic lifters. Made in the U.S.A.
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.
Direct replacement cam drive sprocket. Replaces the stock 34-tooth unit; includes shims. Crankshaft sprocket is 17-tooth. Made in the U.S.A.
Precision-machined, compatible with no-lead fuel and all valve-stem materials; accepts special valve guide seals (sold separately); made in the USA.