2020+ Torque Sensor Extension Wire

Torque sensor extension wire for 2020 and newer Surface 604 eBikes. This wire bridges the torque sensor and the controller, carrying the pedal-force signal that drives the proportional assist system. Also serves as the display wire on all model years.

If you are experiencing intermittent assist or display connectivity issues, this extension wire is an inexpensive part to check before replacing more costly components.