*Torque sensing TSDZ2b mid-drive motor with OSF Upgrade

This motor is flashed with the flexible Open Source Firmware (OSF) for TSDZ2B. This firmware is highly programmable and gives complete control over the performance of the TSDZ2 motor.

We are currently flashing TSDZ2 OSF v20.1C.4-1. This is the most stable and reliable version based upon frequent testing. Click here for a complete features and configuration guide.