If your bike is “NOT LISTED” in our Axle Finder above… 1. Pull your thru axle out and check for dimensions.*First, do you have a proprietary thru axle, such as R.A.T., Naild, Mavic Speed Release or a Surly Bike? If so, visit our Supported Axle Systems Page, here. Many axles now come with the length … Continue reading What Axle Do I Need?