Technical Support
Learn about assembling your bike, troubleshooting, technical help and more.
Programming Bafang mid-drive Motors - BBS02, BBSHD, Ultra (M620, G510)
Advanced Section
- Installing Ultra Motor Mounting Bolts
- 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
General Bike Maintenance
- Brake Bleeding Kits
- How to loosen and retighten the BBS02 motor and attached parts
- Threadless Headset
- How to align speed sensor on mid-drive bike
- Chainring-Chainguard Spacing
- Checking Tire Seating
Display/Controls FAQ
Miscellaneous
- Troubleshooting Armageddon Light
- Troubleshooting a dead bike
- Ultra Motor "clunking" when going backwards
- How to measure length of the steerer tube for fork replacement
- Motor Noise Levels*
- How to Disconnect The Gear Sensor on an Ultra Motor Bike
Juggernaut Ultra/Ultra FS: how tos
Stunner: How tos
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