S&S 640C Chain Drive camshaft kit is a great way to increase performance at an affordable price. This cam is designed for engines of 95 inch or more with compression ratios between 10.5:1 and 11.5:1 used in S&S 124 inch engines.
Kit includes cams, gearcover gaskets, cam bearings, and instructions.
For 2006 Harley-Davidson® Dyna® and 2007-16 big twin models
Special valve springs will be needed.
Fuel injection tuning required.
551 cams are not recommended with compression ratio of 10:1 or higher.
S&S can do a special order cam. Contact your S&S Customer Service Representative for more information.
Not legal for sale or use on CA or EPA pollution controlled motorcycles