The Wahoo Kickr 12mm x 142mm Adapter kit comes with everything you need to mount most 12x142 thru-axle bikes on your KICKR indoor trainer. This kit comes with everything you need to mount most 12x142 thru-axle bikes on your KICKR indoor trainer.   Wahoo Kickr 12mm x 142mm Adapter Contents Wahoo Kickr 12mm x 142mm Adapter will work only with the 2014 and 2016 editions of the KICKR. It includes the following: Threaded Axle Spacer Hub Width Adapter Conical Axle Adapter Flat Axle Adapter XL Quick Release Skewer Extended Quick Release Nut