Monroe taper wire springs apply radial force due to their special shape and ensure optimal control of the vehicle at all speeds. Unlike conventional coil spring types, in taper wire springs, the wire diameter varies in size to achieve progressive spring rate. As a result, the spring rate increases in proportion to the spring compression rate. MonroeŽ taper wire springs are fitted with protective sleeves used to avoid wear due to coils touching each other when the spring is compressed.

• All Monroe coil-springs are manufactured from finest quality silicon chrome or chrome vanadium spring steels
• Shot peening involves subjecting the spring to a high velocity stream of spherical steel shot. This serves to dramatically increase the fatigue life of the spring.
• Monroe coil-springs are treated with a phosphate coat to prevent corrosion and provide a good key for the epoxy powder coating.
• Monroe manufacturing methods include both hot- and cold-coiling, both techniques are specified by vehicle manufacturers today.
  • Cold coiling on < 15 mm wire
  • Hot coiling on > 15 mm wire