Active filters
Lighter and stronger than stock with CNC-machined construction and included hardware. Made in the USA.
High-quality OE replacement components for reliable bearing retention and precise fit.
Replaces the stock compliance-fitting or rigid-mount manifold for '84-'99. Fits 5.5550" length cylinders; compatible with stock or S&S heads. Made in USA.
Stainless steel replacement intake and exhaust valves for S&S heads. Made in the USA.
Precision J-form cylinder stud kit with eight studs, moly assembly lubricant, and thread sealant. Stock replacement and reusable; manufactured by ARP® in the USA.
Precision-ground studs with radius-ground thread ends and hydraulically rolled threads for maximum strength and reduced notch sensitivity.
Reinforces rocker arm shaft standoffs to prevent cylinder head cracking.