2-inch OD ADX 2.0 Adventure Series Coilover Shock with remote reservoir includes dual coil springs. Skyjacker's legendary Softride coil spring technology engineered two separate coil spring rates to deliver a quiet consistent controlled stability and smooth riding comfort with great articulation. OEM coil spring frame and lower shock mounts remain intact. From higher speeds to a slow advance, these Rear Coilover Shocks work.