Les Richmond Automotive supplies the largest range of springs for Land Rovers. But even with our huge range we cannot please everybody, especially when it comes to vehicles which have large load changes. The use of a Firestone or Polyair bag system is then implemented. These bags fit inside the rear spring and are operated by air pressure. For example if the car has no luggage the air bags are not required and the supple ride is retained. Once the vehicle is loaded or towing a heavy trailer the additional air bags can be used to level the vehicle and control the extra weight. The Firestone or Polyair bags are a great solution for many people.