Engine

Active filters
Directs air through a side scoop to cool cylinder heads; includes a high-powered waterproof fan, temperature switch (activates at 140°F), manual override, wiring and hardware. Plug-and-play installation with no drilling. Not for "Twin Cooled" models.
Complete mounting kit with all required hardware for inner primary installation. Made in the USA.
Plug and plug kits for various Harley‑Davidson oil systems; includes washers or O‑rings as required. Made in the U.S.A.
Heat-treated, plated adjuster bolts with included chrome lock nuts. Made in the USA.
Durable button-head Allen drain screws with copper compression washers for fork sliders.
Stem bolt with washer; complete hardware kit, made in the U.S.A.
Complete mounting kit for rotors, sprockets and belt drives; includes all required hardware for installation.
Three screws to mount S&S air cleaner covers. Made in the U.S.A.
Kit for mounting rotors to hubs; sturdy construction and made in the U.S.A.
Secure, precision fastener for motorcycle control assemblies. Made in the U.S.A.
Complete rotor-to-hub kit for single-disc applications. Two kits required for dual-disc setups.
Complete bolt kit for primary and derby cover service. Made in the U.S.A.
Durable fastener engineered for secure attachment of control assemblies; precision fit and corrosion resistance.