An adapter that provides safe transport of bikes with carbon fibre frames. The pressure is distributed over a large area to minimise the risk of damage to the frame. It is suitable for all types of frame dimensions and is easy to adapt because it has no loose parts. The adapter has a soft rubber edge of TPE to avoid scratches on the bicycle frame. Only for use with Thule bicycle holders with a torque-limiting knob (e.g. Thule ProRide 598, Thule EasyFold, Thule EuroClassic G6 and cycle holders with Thule AcuTight Knob 528).