One of the best upgrades for your WP suspension is the KYB cartridge kit.  Want to improve your AER, Xplor or 4cs WP fork? This is for you. This upgrade allows you to retain the WP fork outers whilst replacing the internals with quality KYB units which is where the magic happens. 

The Off-Road Valve System is a replacement internal damping system giving better response times and extended adjustment range for enhanced performance on all terrains including sand, hard pack and rocks, increasing grip, cornering performance and jumping while maximizing the stability and ride quality for more positive and safer control.

Designed with performance in mind, and has been rigorously tested to ensure maximum performance.  The new damping system includes complete compression and rebound assemblies with new pistons, finer adjustment control needles and a new hydraulic bottoming cup, which seals the cartridge tube to improve damping response time and bottoming control.

This is one of THE best upgrades for your bike! Tested by MotoSR and used by many of our customers.


Our KYB Cartridge kits are made to upgrade your fork to a new level, without having to buy a new fork.

The kits are available for WP AER, XPLOR and 4CS forks and are made to improve the behavior of the front fork regarding feedback and performance.

Each kit is personalized for the riders ability and weight making a setup that is perfect for you.


Included are these Billet CNC Machined axle brackets.

These fully anodized axle brackets, are high end products tailor-made to fit your KTM, Husqvarna or GasGas bike.

With their dark black color, they not only look good, but they’re also more durable than standard brackets.