Technical Support

Programming Bafang mid-drive Motors - BBS02, BBSHD, Ultra (M620, G510)

• 52V Programming for BBS02
• Bafang Controller/ PAS Programming Guide
• Stock Ultra settings and Programming guide

Advanced Section

• Thudbuster Installation Guide
• Guide: Installation of Downtube Battery for Juggernaut HD Duo
• Ultra Motor Removal From Bike
• Biktrix Armageddon Light: Installation Guide
• Programming Throttle on a Bafang Motor
• TSDZ2 Tongheng Motor Kit Programming

See all 10 articles

General Bike Maintenance

• How to safely unplug display cable
• Brake Pad Model Names
• How to Install Pedals
• How to Adjust Quill Stem (Stunner, Stunner-X, 2018 Stunner LT)
• How to Fix Most Shifting Issues (Derailleur Adjustment)
• Adjusting/Aligning disk brakes

Display/Controls FAQ

• C600e Bigstone Display for Stunner LT
• How to troubleshoot brake sensor errors
• Why is my odometer resetting or clock not keeping time?
• How Do I turn on the Headlight
• Complete list of Displays

Miscellaneous

• Motor Noise Levels*
• How to Disconnect The Gear Sensor on an Ultra Motor Bike
• Magura Vyron Dropper Seapost Manual
• DNM Shock Manual
• Where is the Serial Number on my bike?
• Swapping/Replacing the top-mount on bike frame

See all 9 articles

Juggernaut Ultra/Ultra FS: how tos

• How to Mount Rear Rack on 2019 Juggernaut FS
• Testing torque sensor on Ultra motors
• Ultra FS - 2020 Modified Lower-Front Pivot Replacement
• Ultra FS - Lower-Front Pivot Replacement
• FS Pivot Hardware labeles
• Ultra FS: Seat too high

Stunner: How tos

• Adjusting the Sturmey Archer RX-RK5
• Change Assist level and Speed limit on 850c/DPC14 (Stunner, Juggernaut HD)

Stunner LT

• Stunner LT Cadence Sensor Replacement DIY
• Stunner LT S830 Display Settings
• Stunner LT Error Codes
• Stunner LT: Debugging
• Stunner LT: M5 Display settings
• Stunner LT: Inconsistent PAS fix

See all 7 articles

Troubleshooting for mid-drive (Bafang BBS02, BBSHD and Ultra motor) ebikes

• BBSHD: Resolve ERR07