Single sprocket

A single sprocket for mounting on a pedal crank, which is mounted rotatably about an axis of rotation of a bicycle, and for engaging a bicycle chain with chain inner link plate pairs and chain outer link plate pairs, the single sprocket comprising:

• an axial outer side,
• an axial inner side,
• a hub region with an inner profile at a radially inner end of the single sprocket for transmitting torque from the pedal crank to the single sprocket, the hub region defining an axial hub center plane between a hub outer plane and a hub inner plane,
• a tooth region with a plurality of teeth at a radially outer end of the single sprocket for engaging the bicycle chain, the tooth region defining an axial tooth center plane between a tooth outer plane and a tooth inner plane, the tooth inner plane defined by surfaces lying furthermost on the inside in an axial direction of the plurality of teeth, and
• a connecting region which extends in a radial direction between the hub region and the tooth region of the single sprocket and connects said hub region and tooth region to each other, the connecting region defining a connecting center plane between a connecting outer plane and a connecting inner plane, and the connecting inner plane defined by surfaces lying furthermost on the inside in the axial direction of the connecting region,
• wherein the axial tooth center plane is offset inwards in the axial direction with respect to the axial hub center plane, and the connecting inner plane of the connecting region is offset inwards in the axial direction with respect to the tooth inner plane of the tooth region, and
• wherein the connecting region is formed at least in part by a plurality of arms extending from the hub region to the tooth region connecting said hub region and tooth region to each other, each of the plurality of arms having a thin-walled open cross section of substantially U-Shaped design, a wall thickness of which is small relative to an axial width of the connecting region.