The AWD 15,000 series is the world's best built AWD chassis dynamometer in its class at any price. The 15,000 series is capable of supporting speeds up to 240+ MPH and 4400+ HP. The 15,000 series chassis dyno's are also upgradeable for the eddy brake for steady state testing, which can support an additional 850 HP. The 15,000 comes standard with our X Factor Knurling option which provides the highest traction over all other competitors. The optional eddy brake assembly sits directly on the shaft between the two rolls - no need to couple with a belt or universal joint all power is directly transferred from the wheels to the load cell. The rear section is coupled to 8 linked rollers with 36-86 Inch track width Gates Poly Chain? GT3? belts. This AWD system dyno incorporates linkage which insures that the front and rear rollers are always spinning at precisely the same road speed. This process eliminates the possibility of activating a vehicle?s traction control system and also insures that a vehicle?s torque management system is operating under the assumption that the vehicle is not skidding, turning or slipping.