DIY FORK SPRING INSTALL - WHAT YOU NEED TO KNOW 1, 2, 3. #1 DO NOT INSTALL SPRINGS WITH TOO LARGE AN OD! Spring Outside Diameters (OD) example sizes: WP 48mm 43.5mm to 44mm OD dependion on year. KYB 48mm 44mm OD SHOWA 49mm 45mm OD If the springs are 1/2mm smaller OD no big deal. #2 YOU MAY HAVE TO TRIM SPRING GUIDES! Spring inside diameters: Spring inside diameters will vary depending on the wire size. Stiffer spring rates need thicker wire and the ID will be smaller. M