Thule 939 velospace xt 13 pin towball carrierthis versatile bike rack is specifically designed to mount to the towbar of your car and holds everything from e bikes to fat bikes and kid's bikes. With its ability to hold up to 3 bikes at a time, you can additionally increase this load capability to 4 bikes by adding an xt bike adapter sold separately. Finally, this secure model uses lockable clamps and extra long wheel straps which allows for smooth and safe transportation.features high load capacity enabling transport of e bikes and heavy mountain bikes possible to increase the load capacity to 4 bikes by adding thule velospace xt bike adapter extra long wheel trays enabling transport of large bikes up to 1300 mm wheelbase adjustable pump buckles with extra long wheel straps for easy fastening of wheels up to 4.7 wheels enabling transport of fat bikes easy mounting of bikes through detachable bike arms with thule acutight torque limiter knobs that click when optimal torque is reached easy mounting and adjustment of the bike rack before closing the tightening handle, thanks to the towbar coupling's initial stability easy trunk access with bikes mounted, thanks to smart foot pedal tilt. Even very large rear doors can be opened due to a wide tilt angle lock your bikes to the bike rack and your bike rack to the towbar locks included combine with thule backspace xt to create an all round cargo carrier, giving the car 300l of easily accessed, extra loading space dimensions 135x73x79cm distance between bikes 19cm load capacity 60kg max number of bikes 3 max bike weight 30kg power connector 13 pin fits frame dimensions 22 80mm weight 20.6kgbuy thule accessories from chain reaction cycles, the world's largest online bike store.