Fox 40 Axle Assembly The Fox 40 Axle assembly works on Fox 40 forks 2014 and older. It's difficult for a fork axle to become damaged because it is primarily hidden inside the fork and hub, but it can happen. Front axles are also very easy to loose or forget if you are in a rush. If you need a new axle for your 2014 or older Fox 40, we have them here for you. Features Manufacturer Part Number: 820-00-024-KIT | Fox Racing Shox | 40 Axle Assembly | Black | 20Mm, Fox Racing Shox | #820-00-024-Kit