S&S 631 Cam For Harley Big Twin Evo 1984-1999

S&S Cycle 631 Camshaft For Harley Big Twin Evo

S&S has been in the business of making Harley-Davidson motorcycles go fast for a very long time, and their innovation in the world of bumpsticks is not exactly a secret. If you’re looking for more power from your bike, a cam is a wonderful place to start – especially if you’ve already done most of the easy ‘bolt-on’ modifications. Installing an S&S cam is a surefire way to make your mill suit your riding style while getting maximum output.

Features:

• S&S cams are tested on the dyno, street and track before being offered to the public
• With hundreds of hours of testing on each cam, you know you are getting the best cam S&S can produce
• Made in the USA

631 Cam Info:

• Designed for high-RPM applications
• For all high-compression engines 11:1 and up compression
• 4500 RPM-6500 RPM
• Incredible performance, but expect more wear and tear on your valve train components
• Intake open/close 34°/61°
• Exhaust open/close 66°/29°
• Intake duration 275°
• Exhaust duration 276°
• Lift .630″