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Integrate your light and seatpost clamp with the SON Rear Dynamo Powered Red Light seatpost clamp. It replaces your existing seatclamp completely.

For replacing the collar on a seat tube with either a 31.8 mm or 34.9 mm diameter.

Please note: this is the frame seat tube diameter measurement, not the seat post diameter.

SON Coaxial Cable 190 cm (fixed inside the housing, bare ends, connectors separately enclosed)

Conforms with German legal regulations / ISO 6742

Weight (w/o cable): 50 g