The Tein Street Advance Z Miata coilovers
*Spring Rate: 392lb (7kg) Front / 336lb (6kg) Rear
*Upper Mounts: Not included. You re-use your factory upper mounts.
*Ride height can be adjusted by raising or lowering the threaded spring perch.
*Twin-tube shock with 16-way damping force adjustment.
*EDFC series compatibility
*Durable finish: Proprietary ZT surface coating and Tein's signature 2-layer green powdercoating.