Andrews TW9 Series Chain Drive Camshafts For Harley Indulge in the legacy of excellence with Andrews Products, a trailblazer in motorsports since 1972. Acknowledged as a pioneer globally, Andrews utilizes modern engineering and design techniques to deliver camshafts of the highest caliber. For the experienced rider, Andrews signifies a commitment to top-tier performance and innovation. Features: Only the best alloy steel billets and heat-treating processes are utilized Made in the USA TW9 Cam Specs: Bolt-in cam with more power through the entire rpm range Peak rpm range of 1000-5400 Intake open/close 2/28 Exhaust open/close 40/8 Intake duration 242 Exhaust duration 252 Intake lift at TDC .153 Exhaust lift at Tdc: .163 Intake lift .492 Exhaust lift .486 Uses stock springs Note: Installer must check coil bind, valve-to-valve clearance, and valve-to-piston clearance