Regardless of displacement or compression ratio with a stock starter, Easy Start Cams from S&S® Cycle make hard starting obsolete for big twins. Available in chain drive and gear drive versions. Don't get caught "dead" without them! More Proven Performance® from S&S Cycle, Inc., the leader in V-Twin high performance parts since 1958.
The 640 cams are designed as a great way to increase performance at an affordable price with quick installation
For technical camshaft information along with detailed product support, please visit our Performance Cams page.