Modified on Wed, 26 Nov at 4:01 PM
MOD Berlin Assembly & User Guide
In this article: You'll find links to assemble your MOD Berlin and learn key tips and tricks to get the most out of your MOD BIKE.
Difficulty
★★☆ Medium
Estimated Time
60–120 Min
Before You Start
Tools you will need
- Adjustable Wrench (included in your bike tool kit)
- Multitool with Allen Wrenches (included in your bike tool kit)
- Bolt Tray (or any small container for screws)
- Pliers (Purchase on Amazon)
- Cable Snips (Purchase on Amazon)
Preparation
- Set up a large, stable workspace.
- Unbox the bike but keep packing materials for 14 days.
- Review the links below for the correct guide before starting.
Steps
Step 1: Follow the Assembly Guide
Assemble your bike using our step-by-step guide:
NOTE: We highly recommend professional assembly. Visit your local bike shop or book a mobile technician through Velofix.
Step 2: Learn the Basics
Once assembled, review the User Guide to learn essential functions and riding basics:
Step 3: Learn Tips & Tricks
Headlight & Taillight
Hold the + button for 3 seconds to turn the headlight and taillight ON/OFF.
MOD Connect
Your MOD Berlin pairs wirelessly with Lumos Ultra helmets for turn signals and brake lights.
See the connection guide: MOD Connect
Version Number
Located on the back of the seat post. No number = Version 01 or 02.
Serial Number
Located on the front frame, directly under the head tube.
Mounting Points
Pre-drilled mounts for a water bottle holder, and Foldylock.
Dual Battery Compatible
Your MOD Berlin supports a second battery for extended range.
USB Port
There’s a hidden USB port under the display that can power your MOD USB Rechargeable Headlight, MOD Alert, Lumos Ultra Helmet, or even your phone.
Error Code 25
Avoid holding the brakes when powering on the bike, or the display will show FAULT 25.
PSI
Check the tire sidewall for the recommended PSI.
Rigid Seat Post (for shorter riders)
All MOD BIKES include a suspension seat post, but the built-in suspension adds a few inches of height and limits how low the seat can go. If you need a lower minimum seat height, swap the suspension post for a rigid seat post. 
Troubleshooting
Loose handlebars or stem → Tighten stem bolts securely using a torque wrench (typically 5–7 Nm) and confirm alignment with the front wheel.
Brakes rubbing or misaligned → Loosen the caliper bolts, squeeze the brake lever to center the caliper, then retighten bolts while holding the lever.
Pedals won’t thread in or feel stuck → Confirm you're installing the correct pedal on the correct side (L/R marked). Thread in by hand before tightening with a wrench.
Chain falls off or shifts poorly → Check derailleur alignment, limit screws, and chain routing. Adjust cable tension using the barrel adjuster if needed.
Crank or other bolts keep loosening → Remove the bolt, apply thread locker (like Loctite Blue), and re-tighten to spec.
FAQs
- How fast can an e-bike go?
MOD BIKES are Class 3 electric bikes meaning their max speed is 28 mph. - How far can an e-bike travel on a single charge?
On flat terrain, and with a full charge, our bikes travel for 50 miles. - Do I need a license or registration to ride an e-bike?
Most of the USA does not require a license or registration to operate Class 3 e-bikes, but some states do. Please check with your local government. - How long does it take to charge an e-bike battery?
6-8 hours from fully depleted. - Can I ride an e-bike in the rain?
Yes, you can ride the bike in the rain, but we recommend pulling over and waiting under some cover if it is a torrential downpour or hailing. - What’s the difference between pedal assist and throttle?
When you pedal, Pedal Assist activates the motor to a certain percentage based on the mode; the throttle activates the motor without pedaling. - How long do e-bike batteries last before needing replacement?
With proper battery maintenance a battery can last upwards of 8+ years. - Can I ride an e-bike without using the motor?
Yes you can! The Pedal Assist can be turned off on all MOD BIKES models.
Warning
⚠️ Important Safety & Liability Notice Improper setup, use, or modification of your MOD Bike may result in damage or injury. Always ensure all bolts, accessories, and attachments are securely installed before riding. If you are unsure about any installation or adjustment, please consult a qualified bike technician. MOD BIKES is not responsible for damage or injury caused by incorrect use or improper assembly.