Suspension Systems - Replacement Coil Springs - Air Suspension Kits - Lift Kits - Lowering Springs - Sport Kits. Since 1976 MAD has been developing solutions for the automotive industry, with continuing focus on drivers. Nowadays, everyone wants to drive in comfort and safety, but especially to be able to enjoy the pleasure of being behind the wheel. MAD is a specialist company with the emphasis on customised work and quality.