Product Information:**IMPORTANT** PLEASE READ BEFORE PURCHASING : Vehicle realignment is recommended after installation, PROFESSIONAL INSTALLATION RECOMMENDED. This set of coilovers doesn't come with installation instructions for as you may know, these are after market suspension parts. We highly recommend professional installation ONLY. Godspeed Project will ONLY warranty the item if the item is installed by a ASE Certified Mechanic. Godspeed Project's MonoSS is our one entity in our family of single-adjustable coilover suspension kits. These coilovers are designed to be a streetable race built coilover at an affordable price. It features a monotube damper that is made out of a carbon seamless steel 52mm tube with a performance internal piston providing maximum damper response. The cold-bent springs are made from high strength SAE9252 steel to optimize the balance between performance and comfort. Using race quality shock oil, Godspeed Project can guarantee exceptional damper performance at any temperature on and off the track. The top of the shock is attached to the car using a high quality top hat that features a high performance Japanese KOYO 6204Z bearing pillow ball mount (when applicable). The bottom shock brackets are made out of a T7075 forged aluminum or carbon steel brackets for lighter weight without sacrificing durability which also includes brake line brackets (when applicable). The MonoSS offers 16 level of damper adjustability which can be set to your preference.Features:Now with extended 2.75" top hat for the rear coilovers!! Longer stroke travel for performance and comfort!Spring rates: Front: 10 kg/mm / Rear: 8 kg/mm16 precise levels of damper adjustment Koyo Japan 6204z bearingPolyurethane bushing (if applicable)Monotube shock designAnodized shock bodyLightweight aluminum lower mount and T7075 forged aluminum / carbon steel brackets52mm carbon steel shock body with a performance internal pistonIndependent ride height and spring preload adjustmentsRace shock oil with a high viscosity index1 Year Warranty from Date of PurchaseSpringFront Rear Rate (kg/mm)108Length (mm)180160I.D. (mm)62 62Camber Plate NoNo Prior to installation, verify all hardware and properly preload suspension to 10mm. Our technical department is available to answer any other questions. Application: Mazda: Miata (1990-1995) Shipping:We may either ship through USPS, UPS, or FedEx at our own discretion.Products are usually shipped out Monday – Friday. Please contact us through email for assistance regarding other shipping methods.Return policy:When receiving your package, please open all of the boxes immediately to check if all the contents are inside and not damaged. All damaged or defective items must be reported within 2 business days from the day the packaged is delivered. If the package appears to be damaged on the outside, please refuse to accept it from the carrier; or please make sure when signing the shipper's proof-of-delivery slip, you include a note stating that the package is or appears damaged. If you do accept a damaged shipment, please inform us immediately. Depending on the product and where/how it was shipped, it may be necessary for you to deal with the carrier. If the product received is defective, a replacement will be sent as soon as possible. If you decide to return the defective item, rather than replace it, a restocking fee will be assessed (15-50% depending on the item) and your original shipping and processing charges will not be refunded. Also, returned products must be in its original packaging which allows us to re-sell the product. We will refuse any damaged or products that are not in good condition. If after 30 days of receiving your product, it proves to be defective, we would like for you to deal with the manufacturer. They will inform you on how to proceed based on their policies. If you are unhappy in any way, please contact us through eBay messages. We will provide you instructions on how and where to return the product.