Cxracing Damper Coilovers Suspension Kit for 1990-2005 Mazda Miata Mx-5 CXRacing Damper CoilOver Suspension Kit for 1990-2005 MAZDA MX-5 Mono-Tube, Top Mount, 32 Step Damper &amp; Ride Height Adjustable Street Sport Spring Rate: Front 8KG(447 lb/in) / Rear 7KG(391 lb/in) One year Warranty*We offer one year warranty for manufacturing defective parts. Professional Installation is a must for this warranty, without a professional installation receipt, warranty is voided. Bad part must be returned for inspection for exchange new part. highlights 32 Step Damper Adjustable Precise control damp valve,Operates smoothly on all road surfaces Expansion/Suppression of shock adjustment Height and low adjustable, Superb road holding qualities and great looks Single Cylinder, or Mono-Tube Design, with Larger cylinder and piston design, advances driving stability and dexterity ARTC Durability Test & Salt Spray Fog Test, Guaranteed with Top Quality Material and Long Durability Item(s) Included Coilovers and Accessories as shown on picture.