Coil springs: for a steady reinforcement of all loads, guarantee a secure and comfortable driving. The strong sacking in of the vehicle's rear will be minimized drastically. Reducing of the cross-wind susceptibility and the inclination of swinging of the caravan trailer combination. The springs will be installed additionally to the originals. Coil spring rear axle for Renault Master, Opel Movano & Nissan Interstar: increase of the permissible maximum weight to 3.850kg, rear axle load increase from 2.060 kg to 2.120 kg. TÜV ( technical control) certified.