Superior Engineering has become one of the best known Premium 4X4 Accessories and 4WD Suspension autoparts manufacturer and supplier in Australia and around the world.Here at Superior Engineering we strive to use the highest quality materials and expert workmanship to produce premium 4X4 products for our customers.We manufacture and supply a huge range of 4X4 products, accessories and suspension parts for almost every type of four wheel drive vehicle on the market. These include Super Flex and hybrid radius arms, drop boxes, shock absorbers, coil springs, leaf springs, steering arms, shackles, bushes, drop boxes, drag links, tie rods and control arms.Coil Air Helper Suspension is designed to fit inside existing coil springs to provide levelling control to a vehicle when under load. These airbags are made of durable polyurethane, providing years of comfort and stability to a vehicle. You can adjust for varying loads and road conditions by simply inflating or deflating, just like inflating a tyre. Kit Includes:2 Airbags,Wires,Spacers kit ,