S4 Custom Tuning
S4 Suspension knows how to tune, adjust and upgrade your suspensions. If you are a racer or a mountain bike addict, we can improve your riding different ways.
- Changing rebound valving
- Changing compression valving
- Changing the piston ports
- Custom made parts
- Install 1 way piston bolt to avoid oil flow crossing
- Changing the volume of the air chamber