The integral Z-shaped anti-roll bars are also incorporated in the KACS, and are completely adjustable, suiting each driver and any specific driving conditions. The function of the anti- roll bars can be set anywhere between very hard to ultra soft, just by replacing the cross-link. The ease with which different suspension characters can be accessed is one of the most appealing aspects of racing a Koenigsegg, according to test drivers. Adjustable length pushrods are connected to each top wishbone and transplant force into the cross-link. These progressive anti-roll bars were conceived and developed by Koenigsegg and are unique in the field of motoring. This simple but ingenious device is a key component in achieving the rock-steady road holding and wonderfully obedient handling of these high-speed machines.