S&S 635G gear drive camshaft set for 1999-'06 HD® Big Twins except '06 HD® Dyna® are recommended for modifed engines with larger displacement and higher compression. More torque and horsepower than bolt in cams can deliver. Requires high lift springs in all applications. An S&S oil pump and cam support plate, along with a stock 2007 and later style hydraulic cam chain tensioner upgrade is highly recommended for chain drive cams. Performance intake and exhaust is recommended for maximum performance increase.
Requires high lift springs in all applications.
Do Not use with S&S 79cc Heads
Not legal for sale or use on CA or EPA pollution controlled motorcycles.