The King Shocks 3.0-inch ID coil spring described as 10 x 300lb is a firmer suspension spring intended for setups using a 3.0-inch inner diameter. It pairs with matching shock bodies for replacement or custom applications, giving a 300lb rate for stiffer load control and handling improvements when integrated into a tuned suspension package with the correct dampers.
King Shocks 3.0 ID Coil Springs 10 x 300lb