Swift Coilover Springs. 65mm Inner Diameter, 228mm (9 inch tall) Free Length, 16kg (896 lbs) Spring Rate. #Z65-228-160. Sold in Pairs. Made In Japan. Highest Quality Springs on the Market! Maintains the best spring rates under compression. Better Spring Memory and Lighter than other comparable springs. Z65-228-160. Other Spring sizes and rates available upon request. Please call for more information. Images may not be actual fitment.