Motorcycle Fork Compression Free Piston Seals & Bushes

Teknik Free Piston Bush & O-Ring

Free Piston Bush & O-Ring

If your motorbike has modern "Separate Function Forks" you will find compression adjuster assemblies use a floating or free piston sealed by bushes and o-rings to stop oil or gas passing between chambers. These genuine factory sealing rubber o-rings and teflon coated metal ring outer guide bushes are common on KYB & Showa systems; learn more about open or closed chamber front forks and read our clickers article for damper basics. If you need small parts we stock Fork Adjuster Parts, aftermarket clicker knobs, billet alloy free pistons and revalving kits.

Seal and guide floating pistons in compression adjusters

  • Maintain oil/gas separation for consistent damping
  • Reduce stiction and preserve smooth fork action
  • Protect teflon coated guide bushes and threaded centre rods
  • Allow reliable inner chamber spring (ICS) preload and clicker function

Recommended Pairings

Consider matching seals and bushes with Suspension Tools for accurate fitment and service.

Shop Free Piston Bush & O-Ring

Browse our range of genuine and aftermarket bushes, o-rings and related piston parts to keep your forks performing correctly.

24 Products Found


Showa Genuine Parts

Showa Genuine Parts Piston ring

Showa Genuine Motorcycle Suspension Parts
(SKU: F25003501)
$12.00
Special Order
Order placed with Showa GPE every 2nd week. 2-3 week delivery if in stock at Showa GPE

Showa Genuine Parts

Showa Genuine Parts Slide Bush C

Showa Genuine Motorcycle Suspension Parts
(SKU: FK7433601)
$24.00
Special Order
Order placed with Showa GPE every 2nd week. 2-3 week delivery if in stock at Showa GPE