Description
If you’re running an Evolution Big Twin and want strong mid-range power without sacrificing streetability, the S&S 561 Cam delivers the performance you need. Built and tested by S&S Cycle engineers across dyno, street, and track conditions, this cam is engineered for reliability and measurable horsepower gains. With hundreds of validation hours behind every grind, you’re investing in proven performance, not speculation.
The 561 is purpose-built for motors up to 10:1 compression and works seamlessly with your existing hydraulic tappet setup, making it an accessible upgrade path for most Evolution platforms.
- S&S 561 profile
- Evolution-specific design
- Hydraulic tappet compatible
- Up to 10:1 compression
- Mid-range optimized
- High-lift springs required
- Made in USA
- Dyno and track tested
- Requires valve clearance verification
- Coil bind inspection needed
Reviews
There are no reviews yet.