The King Shocks 3.0 ID coil spring is specified with a 3.0-inch inner diameter, a 12-inch free length and a 250 lb spring rate. Made for coilover-style shock bodies that accept a 3.0-inch ID spring, it lets tuners change spring rates to adjust ride stiffness and load support. Use these springs to tailor suspension response when that ID and rate fit your setup.
King Shocks 3.0 ID Coil Springs 12 x 250lb