Motorcycle Fork Compression Free Piston Centre Shafts

Teknik Free Piston Centre Shaft

Free Piston Centre Shaft

Genuine and aftermarket free piston centre shafts for motorcycle fork compression adjusters. These hollow centre rods fit KYB and Showa style top caps used on Separate Function Forks, carrying the comp valving piston, shim stack, inner chamber spring and floating free piston for correct damping and ICS preload.

Role in fork damping and adjusters

  • Supports comp valving piston and shim base tower on the hollow centre rod
  • Allows free piston and inner chamber spring to slide, setting initial fork plushness (ICS)
  • Keeps oil sealed via floating piston seals, bushes and top cap o-ring for reliable clicker function
  • Enables upgrades such as billet free pistons, revalving kits and clicker knobs

Recommended Pairings

Consider matching with Suspension Tools. Read our tech guides on open or closed chamber forks and the clickers article. Need parts? See Fork Adjuster Parts, clicker knobs, free pistons and revalving kits.

Shop Free Piston Centre Shaft

Browse compatible centre shafts and upgrade parts for KYB and Showa forks.

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Free Piston Centre Shaft

Genuine and aftermarket free piston centre shafts for motorcycle fork compression adjusters. These hollow centre rods fit KYB and Showa style top caps used on Separate Function Forks, carrying the comp valving piston, shim stack, inner chamber spring and floating free piston for correct damping and ICS preload.

Role in fork damping and adjusters

  • Supports comp valving piston and shim base tower on the hollow centre rod
  • Allows free piston and inner chamber spring to slide, setting initial fork plushness (ICS)
  • Keeps oil sealed via floating piston seals, bushes and top cap o-ring for reliable clicker function
  • Enables upgrades such as billet free pistons, revalving kits and clicker knobs

Recommended Pairings

Consider matching with Suspension Tools. Read our tech guides on open or closed chamber forks and the clickers article. Need parts? See Fork Adjuster Parts, clicker knobs, free pistons and revalving kits.

Shop Free Piston Centre Shaft

Browse compatible centre shafts and upgrade parts for KYB and Showa forks.