S&S 640 CAM 84-99 EVO

Premium S&S Cycle Camshaft - 640 Series - Evolution Big Twin '84-'99 • For large displacement engines 110" and larger with 10.5:1 to 11.5:1 compression and smaller engines, 96"-107" with 11.0:1 to 12.0:1 compression • Less overlap and fast ramps build higher cylinder pressure • Lower TDC lift makes installation easier • Designed for use with hydraulic tappets • Made in the USA • Installer must check coil bind, valve-to-valve clearance, valve-to-piston clearance and cam lobe to case clearance. • Requires high-lift springs. Authentic Parts Unlimited product with real inventory.