Complete 132" engine performance kit converts 114"/117" oil-cooled M8 to 132" with big-bore cylinders, performance-matched 550 cam, adjustable relief valve, and serviceable components.
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Increases pressure relief valve pop-off psi. Spring alone provides the correct spring rate to control pop-off pressure and oil flow in the bypass port. Made in the United States.
Complete kit to convert 114" or 117" oil-cooled M8 engines to 132" displacement while retaining stock height and serial numbers. Includes adjustable pressure relief valve, S&S valve springs, big-bore cylinders, MLS head gaskets and a performance-matched 550 cam.
Broad midrange power band camshaft with a smooth lobe design. Made in the USA. Performance pushrods, lifters and clutch recommended.
Power band for modified engines; bolt-in for stock 96", 103" and 110" engines. Smooth cam-lobe design. Made in the USA.
Complete kit with roller bearings, ARP® bolts, gaskets and hardware to install bolt-in and high-lift camshafts.
Easy-start camshaft kit for Big Twin engines; optimized for Softail and Dyna, bolt-in and made in the USA.
Reduces cranking compression for easier starts; bolt-in kit for 88–124 CID engines; increases power from 3,000 rpm and holds to redline; includes complete hardware; not for OEM compression release models; Made in USA.
Complete camchest overhaul kit that lowers engine and oil temperatures, increases oil pressure and improves smoothness and reliability. Includes high-volume oil pump, Reaper® camshafts, hydraulic roller lifters, Timken® bearings and ARP® fasteners. Fits '07-'17 Twin Cam and '06 Dyna.
Bolt-in camshaft kit for 96–106 CID engines (9:1–9.9:1). Improves low- and midrange torque, strongest at 1,000–4,000 rpm. For '06 Dyna and '07-'17 Twin Cam hydraulic tensioner chain drive systems. Not recommended for 10:1+ compression.