Managing pressure behavior is central to damping force, cavitation resistance and consistency.
Pressure creates flow
When the suspension moves, pressure rises on one side of a piston or valve and drops on the other. That differential pushes oil through ports, bleed circuits and shim stacks, creating the damping force the rider feels.
Why stability matters
If pressure drops too low, aeration or cavitation can reduce consistency. Reservoir pressure, bladder or piston condition, oil viscosity and port design all influence how stable the damping remains through heat and repeated hits.
Workshop checklist
- Check gas pressure and reservoir condition before diagnosing fade as a valving fault.
- Inspect bleed paths, piston bands and seals for leakage that reduces pressure control.
- Use fresh oil with the correct viscosity when comparing damping behavior.
- Consider cavitation risk when making very restrictive stack or port changes.
Next step
Use the calculator for stack comparison, the handbook for deeper theory, or the workshop booking form when the bike needs service or valving work.