Hub Dynamos for Folding Bikes

Folding bikes have become an essential part in big cities traffic. They help to connect a bicycle trip ideally with motor vehicles as trains and busses (if necessary with cars as well). Since this way of eco mobility is so important for us we developed the first extra narrow hub dynamo for folding bikes, the SON XS, more than 10 years ago.

Today, we manufacture the 3rd generation model, the SON XS for semi radial spoke pattern in large numbers. The semi radial wheel building technique especially developed for the current SON XS makes it a good deal lighter. It also gives the wheel a modern and extraordinary appearance.

made in Germany
5 years guarantee

SON XS for Brompton

  • semi radial spoke pattern (straight pull spokes slightly bent during wheel building process)
  • 3 standard finishes (polished, silver anodized, black anodized)
  • à-la-carte models with one or two colours on centre part
  • available as ready-made wheel with Brompton rim also
20 hole 342072
28 hole 342872
polished
RRP in D 209,00 €
20 hole 342092
28 hole 342892
silver anodized
RRP in D 209,00 €
20 hole 342062
28 hole 342862
black anodized
RRP in D 209,00 €
28 hole 342882
à la carte
RRP in D 249,00 €

Weight: 350 g

Width: 74 mm

Axle diameter: 8 mm

6 Volt / 3 Watts for wheel size 16″ up to 20″ conforming to German legal regulations

SON XS for Tern, Dahon

  • Folding bike hub dynamo with 9 mm axle end
  • semi radial spoke pattern (straight pull spokes slightly bent during wheel building process)
  • 3 standard finishes (polished, silver anodized, black anodized)
  • à-la-carte models with one or two colours on centre part
20 hole 352072
28 hole 352872
polished
RRP in D 209,00 €
20 hole 352092
28 hole 352892
silver anodized
RRP in D 209,00 €
20 hole 352062
28 hole 352862
black anodized
RRP in D 209,00 €
28 hole 352882
à la carte
RRP in D 249,00 €

Weight: 350 g

Width: 74 mm

Axle diameter: 9 mm

6 Volt / 3 Watts for wheel size 16″ up to 20″ conforming to German legal regulations

  • Optimized Generator

    The claw-pole generator has its coil in the centre. Sheet metal parts are made with elaborate workmanship. Thus unrivalled low no-load lossses are achieved.

  • Pressure Compensation System

    Best possible protection against water ingress is realised by the unique pressure compensation system.

  • High-Quality Bearings

    SON hubs are long-life and maintenance-free due to high-end bearings sealed on both sides from SKF.

  • Precise Spoke Holes

    Precise spoke holes with large countersinks are a must for loadable wheels. This is why it will be sufficient to true the wheel only once.

  • Reliable Wiring

    As connections robust 4.8 mm spade connectors are used. They make a safe connection, when professionally crimped onto SON coaxial cable.

Semi Radial Spoke Pattern

more about wheels