Compression damping shapes support, harshness, bottoming resistance and rider confidence under load.
What compression controls
Compression damping resists fork or shock movement as the wheel moves upward or the chassis loads the suspension. It affects braking support, bump absorption, bottoming resistance and how much the bike pitches under load.
Clickers versus valving
External compression adjusters usually fine-tune bleed or a dedicated adjuster circuit. If the bike needs a large change in support, comfort or high-speed control, the spring rate, oil height or shim stack may need attention instead.
Workshop checklist
- Note whether the complaint is dive, harshness, deflection or bottoming.
- Return clickers to a known baseline before testing changes.
- Use small compression adjustments and re-check the same braking or bump zone.
- Service the fork or shock if damping changes feel inconsistent as heat builds.
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.