The new Sturmey-Archer X-FDD hub is the first ever combined drum brake and Dynohub electrical generator.
Requires No Batteries Bright illumination for safer night riding without the need and expense of batteries. Less Rolling Resistance Wiring harness uses push-in connectors to make installation fast and easy. Lamp Compatibility System is compatible with various Headlights and Tail lights
Model No. X-FDD Over Lock-nut Dimension 100 mm Axle type solid-nutted Spoke Hole 36 hole only Spoke Size --14 Power Output: 6 Volts, 3 Watts
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