The ADAPTRAC system is compatible with bike frames utilizing the newer 12x142mm axle (rear wheel) and 15mm axle (front wheel). Included in the system are replacement axles specific to your bike brand and model. All components can be installed by anyone reasonably handy with simple tools in less than half an hour. Refer to the instruction section of this website for download in PDF format. Alternatively, any bike shop can easily handle the install.