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. Specs:Retention disc captures bottom of coil spring to prevent unseating at full extension,Inexpensive solution to dangerous problem of losing a coil spring during vehicle operation,When combined with the Superior Coil Drop Allows use of extended lenght shock absorbers for increased suspension travel,Easy bolt-on installation can be completed in just few minutes,Sold in pairs,