The King Shocks 3.0 ID coil spring is specified with a 3.0-inch inner diameter, a 12-inch free length and a 350 lb spring rate. Built for coilover-style use where a 3.0-inch ID is required, it provides a firmer spring option for adjusting ride stiffness and load control. Use it to modify handling characteristics when that length and rate match your suspension design.
King Shocks 3.0 ID Coil Springs 12 x 350lb