Motorcycle Fork Cartridge Rod Jam Nuts

Teknik Fork Cartridge Rod Jam Nut

Fork Cartridge Rod Jam Nut

Motorbike front forks contain an internal cartridge that does the damping work, and the fork cartridge rod is the sliding centre shaft that links the rebound damping piston to the cartridge. The top of that hollow shaft must be locked to the rebound piston base tower, so these specially shaped long locknuts fasten the two together. Because of the tolerances and torque, jam nuts are best replaced at every suspension rebuild. Learn more about cartridge designs in our closed vs open chamber guide and how clickers interact with the pushrod in our damping adjusters article. We also stock performance revalving kits and valving shims.

Function and replacement advice for fork cartridge rod jam nuts

  • Locks the fork cartridge rod to the rebound damping piston base tower
  • Specialised long locknut shape to meet fork tolerances and torque
  • Replace at every suspension rebuild rather than reusing old jamnuts
  • Affects clicker/pushrod operation and oil flow through piston and shim stack

Recommended Pairings

Consider matching with Suspension Tools for correct torque and installation.

Shop Fork Cartridge Rod Jam Nut

Browse our selection of jam nuts and related cartridge components to keep your forks properly secured and performing.

14 Products Found












Showa Genuine Parts

Showa Genuine Parts Lock Nut Mod

Showa Genuine Motorcycle Suspension Parts
(SKU: F41000003)
$117.60
Special Order
Order placed with Showa GPE every 2nd week. 2-3 week delivery if in stock at Showa GPE

Showa Genuine Parts

Showa Piston Rod Complete Mod

Showa Genuine Motorcycle Suspension Parts
(SKU: F41000004)
$110.00
Special Order
Order placed with Showa GPE every 2nd week. 2-3 week delivery if in stock at Showa GPE

Fork Cartridge Rod Jam Nut

Motorbike front forks contain an internal cartridge that does the damping work, and the fork cartridge rod is the sliding centre shaft that links the rebound damping piston to the cartridge. The top of that hollow shaft must be locked to the rebound piston base tower, so these specially shaped long locknuts fasten the two together. Because of the tolerances and torque, jam nuts are best replaced at every suspension rebuild. Learn more about cartridge designs in our closed vs open chamber guide and how clickers interact with the pushrod in our damping adjusters article. We also stock performance revalving kits and valving shims.

Function and replacement advice for fork cartridge rod jam nuts

  • Locks the fork cartridge rod to the rebound damping piston base tower
  • Specialised long locknut shape to meet fork tolerances and torque
  • Replace at every suspension rebuild rather than reusing old jamnuts
  • Affects clicker/pushrod operation and oil flow through piston and shim stack

Recommended Pairings

Consider matching with Suspension Tools for correct torque and installation.

Shop Fork Cartridge Rod Jam Nut

Browse our selection of jam nuts and related cartridge components to keep your forks properly secured and performing.