Andrews M554 Series Chain Drive Camshaft For Harley Since its inception in 1972, Andrews Products has stood at the forefront of the motorsports industry, championed for its pioneering use of advanced engineering, design, and manufacturing techniques. It specializes in crafting high-caliber camshafts for performance motorcycles, ensuring riders achieve unmatched quality and efficiency on the track. Features: For 124 and 128 big-bore motors with head work Also works well with 117 engines in lighter bikes Only the best alloy steel billets and heat-treating processes are utilized Great choice for more spirited riding Excellent choice for the big bore kits with higher compression ratios More torque thru entire range (1600-5500rpm) Made in the USA M554 Cam Specs: Peak rpm range of 1600-5500 Intake open/close 12/34 Exhaust open/close 63/13 Intake duration 256 Exhaust duration 256 Intake lift at Tdc: .138 Exhaust lift at Tdc: .140 Intake lift .550 Exhaust lift .550 Uses high-lift springs