Motorcycle Fork Adjustable Replacement Cartridge Kits

Fork Cartridge Kits

Upgrade your motorcycle forks with precision cartridge kits to improve damping, comfort and control across road, track and off-road riding. Kits include mechanical clicker systems, air-to-coil conversions and ESA-compatible plug-in solutions for modern forks.

Precision damping, tunability and long-term serviceability

  • Consistent compression & rebound control through the full fork stroke
  • Reduced harshness, improved traction and reduced brake dive
  • Clicker-adjustable and ESA-compatible options for fine tuning
  • Rebuildable, revalvable internals and correct spring rates for lasting performance

Recommended Pairings

Consider matching upgrades with Suspension Tools and suspension oil for correct setup. For kit types and fitment see Mechanical fork cartridges, Air-to-coil conversions and ESA-compatible cartridges. Professional fitting and setup advice is available via our dealer finder, and oils and consumables at Suspension Oils. Contact our specialists at Contact Us.

Shop Fork Cartridge Kits

Explore cartridge kits from TracTive, Ohlins, YSS, KYB, Showa and Krooztune to suit your bike and riding style.

312 Products Found









Tractive eX-TREME Cartridge kit BMW S 1000 XR

Tractive eX-TREME Cartridge kit BMW S 1000 XR

Front | Standard Height
(SKU: 35BM15-P8377-TR)
Position (Front or Rear):   Front
Damping Adjustment Type:   Electronic
Seat Height Change (mm):   Standard Height
Shock Length Eye to Eye (mm):   802.5 (820)
Spring Rate Standard:   8.5 N/mm
Type Code:   eX-TREME
Stroke Metal to Metal (mm):   146.5
Notes:   Hydraulic end-stop
Fitted Spring:   8.5-280

Tractive eX-TREME Cartridge kit BMW S 1000 XR

Tractive eX-TREME Cartridge kit BMW S 1000 XR

Front | Factory lowered
(SKU: 35BM15-P8392-TR)
Position (Front or Rear):   Front
Damping Adjustment Type:   Electronic
Seat Height Change (mm):   Factory Lowered
Shock Length Eye to Eye (mm):   766.0 (783.5)
Spring Rate Standard:   8.5 N/mm
Type Code:   eX-TREME
Stroke Metal to Metal (mm):   115.5
Notes:   Hydraulic end-stop
Fitted Spring:   8.5-280

Tractive X-TREME Cartridge kit BMW F 850 GS

Tractive X-TREME Cartridge kit BMW F 850 GS

Front | Standard Height
(SKU: 35BM18-R5396-TR)
Position (Front or Rear):   Front
Damping Adjustment Type:   Rebound
Seat Height Change (mm):   Standard Height
Shock Length Eye to Eye (mm):   875.0
Spring Rate Standard:   6.0 N/mm
Type Code:   X-TREME
Stroke Metal to Metal (mm):   215.0
Notes:   Hydraulic end-stop
Fitted Spring:   6.0-390

Tractive X-TREME Cartridge kit BMW F 850 GS

Tractive X-TREME Cartridge kit BMW F 850 GS

Front | Lowered -25mm
(SKU: 35BM18-R5397-TR)
Position (Front or Rear):   Front
Damping Adjustment Type:   Rebound
Seat Height Change (mm):   Lowered -25
Shock Length Eye to Eye (mm):   850.0
Spring Rate Standard:   6.0 N/mm
Type Code:   X-TREME
Stroke Metal to Metal (mm):   200.0
Notes:   Hydraulic end-stop
Fitted Spring:   6.0-390