Tractive Front Cartridge kit X-TREME for Ducati DesertXHigh performance closed cartridge with adjustable rebound and compression damping. Manual preload adjustment. These cartridges fit right into the fork legs without modifications to the fork. The cartridges are closed, meaning that the cartridge is like a separate, pressurised shock absorber inside the fork with its own damping oil for optimal handling. The products were originally developed in close cooperation with adventure riders, world travelers