The S&S 551 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-4000rpm. A great way to increase performance at an affordable price, are installed in a short period of time reusing many stock components, and Easy Start Cams allow stock starter to start any engine.
