Fierce performing camshaft for an array of engine sizes, large displacement 103", 110" and 124" engines looking for a superior torque band with excellent horsepower gains in heavy bikes (2200-6250) Smaller high-revving displacement 95" style engines in lighter bikes looking to twist the throttle and tap into some horsepower (2500-6800 RPM) Large displacements respond well to increased compression ratio and smaller displacements will require it 594 cams require high-performance valve springs, pushrods, lifters, carburetor or throttle body work, performance exhaust, intake and clutch. CAMS 594C CHAIN DRV 99-06