Bontrager Speed Sensor DuoTrap with Cadence Digital Sensor

Only compatible with select Trek frames. Be sure to verify frame compatibily. 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.