WP TRAX Shock Absorbers are the most innovative shock absorbers on the market. The TRAX unit is a very compact system in the bottom of the shock, which significantly improves the traction of the rear wheel. This system has been successfully implemented by the Factory Racing department and many World Championship titles prove how effective it is. The TRAX system has been developed in order to reduce the time after a bump where acceleration of the motorcycle is not possible because of the slow rebound of the rear wheel. The TRAX system registers when the rear wheel has no ground contact and immediately opens an oil bypass so that the rear wheel can return to the ground faster than is possible with a conventional system, ultimately allowing for improved traction and acceleration.