The King Shocks 3.0-inch ID coil spring listed as 10 x 400lb is a high-rate option for suspension assemblies that accept a 3.0-inch inner diameter. It fits matching shock bodies and is intended for use in builds or replacements where a notably stiffer 400lb rate is required. Pair it with suitable dampers to achieve the intended load control and ride characteristics.
King Shocks 3.0 ID Coil Springs 10 x 400lb