Cusco Japan - Street Zero Coilover Kit - Mazda MX-5 Miata Roadster ND5RCSpecifications: Manufacturer: Cusco Japan Part Number: 429 61P CN Type: Street Zero Ref 429 61P CN Front Specs: Full length Adjustable Recommended Height F R: 50 to 0 ? 50 to 0 Maximum adjustment F R: 108 to 0 ? 76 to 0 Spring Rates (Kg): 6 or (5 78 9) Rear Specs: Full length Adjustable Spring Rates (Kg): 3. 5 or (3 4 5 6) Options: Front and rear come with Pillow ball upper mounts : +JPY30,000 Additional Infos: The STREET ZERO series suspension