Ksport CMZ241-AR Asphalt Rally Damper System Inverted steel shock absorber for increased response and less heat build up Spring rates and shock valving specific for drag racing Spring Rates (Kilogram/Pound) - Front: 9.8/549 / Rear 7.2/403 Upper Mounts - Front: Pillowball Upper Mount / Rear: Aluminum Top Mount Heavy duty steel lower mounts