Description
- 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
- Makes best power from 4500 rpm and up
- Works with solid or hydraulic tappets
- Requires high-lift springs
- For all high-compression engines 11:1 and up compression
- Installer must check coil bind, valve-to-valve clearance, valve-to-piston clearance and cam lobe to case clearance.
- Made in the U.S.A.
Ray –
This high-lift cam requires upgraded valve springs and careful installation but delivers exceptional quality and strong power gains in the 4500+ RPM range. I was impressed with the dyno testing and manufacturing quality, though be ready for tradeoffs in low-end torque.
Luis –
The S&S 631 Cam really woke up my Evolution engine and gave it a strong increase in power across the rpm range, I’m thrilled with how it improved the performance of my bike.
Hank –
I installed this S&S cam in my motor and it really wakes it up, pulling hard through the RPM range. I’m very happy with the performance and would definitely recommend this cam.
Keith –
I installed this cam based on the rave reviews, but I’m disappointed with how it performs above 4500 rpm – I was expecting a lot more power. The shipping delays were frustrating too.
Andy –
This cam performs great, making power above 4500 rpm and pairing well with high compression engines. I was thrilled with the power gains compared to other cams I’ve tried.
Johnny –
I was thrilled to install the new cam from S&S in my Harley. The cam woke up my Evolution engine and delivered impressive power gains, just as expected from its reputation.