The Air Lift is used to increase the load on the rear axle or to regulate the level when there is a heavy load or when towing a trailer. The air bellows are conveniently filled from one place with a standard compressed air compressor using the distribution lines included in the scope of delivery. The system is designed for a maximum increase in payload of 1000LBS (450Kg) at a maximum pressure of 2.4 bar. suitable for Jeep Grand Cherokee WJ and WG installation instructions