Spec / Color
Disc brake rotor：6 holes(ISO)
The Son 28 hub dynamo for disc brakes from SON in Germany.
The SON 28 is a universal hub dynamo, suitable for all wheel sizes from 16 up to 29 inch. The SON 28 achieves its nominal power of 3 Watts already at a speed of approx. 16 km/h, when used with a 28" wheel. It is recommended if you need extra light power at low speeds or even if you want to power other devices as well.