Sinewave Reactor

The Sinewave Reactor is an evolution of the Sinewave Cycles Revolution bicycle dynamo powered USB charger.

It converts electricity generated by hub and bottle dynamos to USB output, allowing users to charge USB-powered devices while riding.

Sinewave have taken the performance of our Revolution dynamo-powered USB charger and shrunk it into a package that fits above the star nut in a threadless steerer tube, with a pass through for the 6mm bolt. The only visible part is a custom CNC-milled stem cap holding the USB connector. The cap is only 10.6mm tall and available in silver, black, red and blue.

The Reactor is compatible with 1″ and 1 1/8″ threadless systems.


  • Bicycle touring
  • Commuting
  • Green/Portable Electricity for USB Powered Devices
  • Power USB Battery Chargers or External USB Power Packs
  • Emergency Power Source
  • Navigation while riding
  • Music while riding
  • Best in class efficiency
  • High Speed Overload Protection
  • Simple Installation
  • Light weight
  • Shock and vibration toughened
  • Waterproof
  • Gold-plated USB connector won’t rust or corrode


  • Starts charging at 3.5 MPH (5.5 km/h)
  • Full charging at 9 MPH (14.4km/h)
  • Max current: 1 Amp
  • Weight: 37 grams
  • Dimensions: 14x35x54 mm
  • Wire length: 36″ (91 cm) (contact us if your setup requires a longer wire)
  • Wire ends: Stripped wire


  • 1 year on defects in materials and workmanship.


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