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Bontrager DuoTrap Digital Speed/Cadence Sensor

Model 508126

Say goodbye to zip ties

Bontrager DuoTrap is the integrated sensor that wirelessly transmits ANT+ and Bluetooth Smart signals to your computer or phone. The easy-to-use sensor installs in seconds and fits directly into the chainstay of select Trek bicycles for a clean look and preserved aerodynamics.

Key features

  • ANT+ 2.4 GHz and Bluetooth® Smart wireless digital speed and cadence sensor
  • ANT+ and Bluetooth® Smart allow simultaneous use of Trip 300 and smartphone
  • For use with many ANT+ and Bluetooth® Smart wireless technology enabled devices
  • Includes Bontrager wheel magnet, crank cadence band, and CR2032 battery
  • Find Trek DuoTrap compatible bikes at
  • Visit for a complete list of compatible devices
  • Visit for a complete list of compatible devices
  • Flexible shipping options

    Ship your gear purchase to your home or receive free shipping when you send your order to a Trek retailer for pick-up. All bike purchases must ship to a Trek retailer, some of which offer home delivery.

  • Unconditional Bontrager Guarantee

    If for any reason you're not satisfied with your Bontrager gear, we'll take it back. Either ship it back to us or return to your Trek retailer within 30 days of purchase.

  • Warrantied for life

    All new Trek bikes come with Trek Care — the industry's best warranty and loyalty program. Register your bike and ride easy knowing we've got you covered.

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