The frame is the basic structure of the motorbike and forms the backbone of the vehicle.
The frame is usually made of steel, aluminium or carbon fibre and is designed to have the necessary rigidity and strength to support the weight of the motorbike and rider.
It affects the handling, stability and safety of the motorbike and is often combined with various suspension components to achieve optimum handling.
There are different types of frames, such as tubular frames, trellis frames, shell frames and double loop frames, which are used differently depending on the purpose and type of motorbike.