The Tractive X-TREME Fork Cartridge Kit for BMW F 850 GS replaces the original fork internals with a closed, pressurised sealed-cartridge damping system for more consistent control across changing conditions. This kit is intended for standard-height applications. The pressurised design helps reduce cavitation and keeps damping behaviour stable as the fork works hard over varied surfaces.

Design & features

Built around a dedicated cartridge assembly, this kit uses a sealed damping unit inside each fork leg rather than relying on the stock internal layout. The closed, pressurised architecture supports repeatable damping and clearer front-end feedback for on-road and off-road use.

Tuning Controls

This kit provides external rebound adjustment to tune how quickly the fork extends after a bump. It also includes mechanical spring preload adjustment to help set sag and maintain geometry when rider load or terrain changes.

  • Rebound damping adjustment
  • Mechanical spring preload adjustment

Who is this for?

Suitable for BMW F 850 GS riders who want more tunability and consistent front suspension feel for adventure touring and mixed-surface riding, including carrying luggage or riding over rougher tracks where damping stability matters.

Before You Install

  • Confirm the kit matches your model and intended ride height (standard height application)
  • Set rider sag during installation and make small changes to preload to suit load and preference
  • After installation, fine-tune rebound to balance comfort, grip, and chassis control

Serviceability/Lifecycle

The cartridge kit is fully serviceable, allowing periodic maintenance and rebuilds to keep damping performance consistent over time.

Teknik Motorsport Pty Ltd Warranty terms for TracTive products.

This TracTive product has been assembled with the utmost care and tested according to ISO9001:2015 Quality system. In the unlikely event that the product does not fulfill your expectations because of faulty materials or manufacturing errors, please contact us through your dealer.

Teknik Motorsport Pty Ltd warrants that if, within 24 months of the date of sale the product is found to be defective as a result of manufacturing errors or faulty components, the product will be repaired free of charge by us, or by a TracTive approved repairer at our discretion.

Warranty covers the direct service material cost, service labour cost ($80/hr AUD) and shipping costs of the service partner. Other costs will be regarded on a case by case basis by Teknik Motorsport and TracTive.

 When a claim is made under the warranty, the following conditions have to be met:

  • You must have read the instructions carefully before mounting the product in the vehicle or adjusting the product.
  • The product has to be installed and adjusted as described in the instructions
  • The product must have been maintained and serviced in accordance with the recommendations in the manual. If not described in the manual, the recommended service intervals for regular street use: every 30.000 km or max 2 years, whichever is earlier.
  • Warranty shall apply only when TracTive original parts, procedures and tools have been used to service and/or repair, and if service and repair is performed by designated TracTive partners.
  • The product may not have been neglected, improperly used, altered or subjected to excessive loads. Excluded from warranty are normal wear, damage and rust.
  • A sales receipt or other proof of purchase originally eminating from Teknik Motorsport Pty Ltd. No warranty will be given on TracTive or Touratech products not purchased from or through Teknik Motorsport pty ltd.
  • Excluded from warranty are in particular products which are used in vehicles that are intended or suitable for taking part in sporting events, or have actually been used this way.
  • Recommended service interval for Motorsport applications: every season, or every 50 hours, every 10.000km or after any perceived loss in performance.
SKU 35BM18-R5396-TR
Model # 35BM18-R5396-TR
Barcode # 35BM18R5396TR
Brand TracTive Suspension
Shipping Weight 5.0000kg
Shipping Size 0.200 x 0.200 x 0.900m
Unit Of Measure Set
Type X-TREME
See our Shipping Information See our Frequently Asked Questions
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

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