Our Mountain Bike (MTB) Rack is designed with larger and stronger folding arms to handle both regular MTB tire sizes as well as plus size tires. In fact our MTB rack is also suitable for any bike with larger tire sizes and including E-Bikes and heavy bikes up to 35kg. If you have different brands and models of bike no need to worry about the frame geometry or size, as long as have round front wheels they will fit our racks.