StreetGRIP rear lowering coil springs improve the handling, ride quality and stance of your 1978-1988 GM B-Body muscle car including Monte Carlo, Monte Carlo SS, Malibu, Regal, Grand National, 442, Hurst/Olds, Lemans, Grand Prix, El Camino and T-Type.The dual-rate design provides the best of both worlds with the soft rate section allowing the vehicle to transition small road irregularities via a soft spring rate. When the vehicle compresses the spring far enough (through large bumps or cornering), these coil springs transition to the firmer spring rate to control body roll and movement. We work closely with Hyperco to develop g-body specific spring rates to ensure the best ride and handling.