S&S 583G Gear Drive camshaft kit with new .583 inch lift cam is designed for engines with 96 to 106 CID and 9:1 to 10:1 compression this is a bolt-in cam set designed for stock or mildly modified touring bikes. Greatly improves low-end and midrange torque, strongest from idle - 4000 rpm. Gear Drive cams improves valve timing accuracy by eliminating timing chain lash and there is no tensioner shoes to wear out or fail.