The stock BBSHD controller holds a strong motor back. Our ASI BAC855 upgrade kit replaces it plug and play: set to 4 kW, ready for 48V to 72V packs, with a remote tuning session included. Add FabiRide Dash Pro to change power, assist levels and a speed limit from the bars. The matching wiring harness and Domino throttle parts are listed here too.
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Frequently asked questions
Does fitting the BBSHD controller upgrade need soldering?
No. The controller arrives configured, every plug on the harness matches the BBSHD, and the stock controller simply unplugs. A motor cover in the kit closes the opening it leaves.
Which display should I pair with the ASI BAC855 kit?
FabiRide Dash Pro. It reads the ASI BAC855 and writes settings back to it, so you change power, assist levels, battery voltage and a speed limit from the bars or the app, and see the motor temperature live.
Will 4 kW overheat my BBSHD?
The 2025 kit adds a motor temperature sensor. The controller reads it and reduces power before the motor gets too hot, and it also eases power when the battery runs low.
