SON hub dynamo '28 disc' with IS2000-disc rotor mount & quick release axle

The reference for hub dynamos & disc brakes.

This item is no longer being offered by the manufacturer
  • for all wheel sizes
  • IS 2000 disc rotor mount
  • 15% less no-load loss
  • 65% efficiency
  • Made in Germany

Product information & technical details

brand: SON
Material: Aluminium, stainless steel
brand: SON
axle end diameter: 9mm
hub OLD: 100mm
Disc brake rotor mount: IS 2000
holes: 28, 32, 36
Axle type: quick release


  • The SON 28 is an approved hub dynamo for all wheel sizes 16" to 29"
  • It reaches the nominal power in 28" wheel at approximately 16 km/h (SONdelux 19 km/h). It is recommended, if much light is needed to be at slow speeds or other devices has to be operated or their batteries has to be charged
  • The new SON 28 is similar to the SONdelux in construction and appearance.
  • 15% less no-load losses and 140 g of less weight
  • The pressure compensation system effectively protects all types of SON against ingress of water.
  • Manufacturer's warranty: 5 years

Further details

technical data sheet
electric power 6V/3W
efficiency 65% at 15 km/h speed with 28" wheel size
sign of conformity K439 for 305-622 ETRTO-wheel size
power loss idle 0,5W at 15 km/h
hole plating plug with 4,8mm width, bipolar, floating
axle hollow axle for quick release
bearings deep groove ball bearings, #629-2RS1
housing Aluminium 6082 T6, anodisized
sealing gap seal and seal rings, pressure-equalizing system
magnet rotor neodymium-iron-boron, 26-pole

Customer Reviews

1 English review written for SON 28 disc hub dynamo IS silver

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1 review
1 customer review in English