STRØM City W Assembly

Please follow the video or pdf guide in order to assemble your new city bike securely.
After assembly, you will have to watch our ready for the road guide for tightning the bolts, lubricate the chain and adjust gears, brakes, saddles and handlebar in to experience the best ride possible.

PDF Guide
PDF Guide

Step by step

Step 1: Introduction
Step 2: The Handlebar
Step 3: The Front Wheel
Step 4: The Pedals
Step 5: The Fender
Step 6: The Saddle
Step 7: Adjust The Handlebar
Step 8: Cable Management
Step 9: Air
Step 10: Brakes Alignment
Step 11: Final Adjustments
Step 12: Important Notes!

Tools needed 

Allen hex key – mm


Torx 20


Side cutter

Cable tie


Removal bottom backet tool

Chain cleaner

Lubricant for chain

Bike stand (Nice to have)

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Begin by taking the seat out.
Take the whole bike out. Note that the front wheel is loose, and is attached to the bike.
Take the remaining parts out. There should be a small box and a longer rectangular box.

1 – Introduction

Be sure you have everything you would need for the bike.

Bike parts:
Front fender
Front-wheel with motor
Saddle with pin

Content of the small box:
2 x pedals
1 x charger
3 x Allen hex keys
2 x wrenches
1 x Cable with 3 or 4 heads.
Cable strips

The big rectangular box contains the battery.

2 – The Handlebar

  1. Remove the protection gradually.
  2. Place the head cap on top of the head tube.
  3. Grab the handlebar and gently place it inside the head tube. Leave it for now, we will tighten it up later.

3 – The front wheel

  1. Take the fender of the wheel.
  2. Remove the big plastic piece protecting the brake disc.
  3. Unscrew the two bolts located at the center of the wheel. Make sure that the tooth of the O ring bolts is pointing downwards.
  4. Insert the wheel into the fork. Be sure the disc brake will be aligned with the brake mechanism.
  5. Remove the protective foam for the bike stand and let the bike rest on it.
  6. Tighten the bolts back on the wheel and use the 19mm wrench.

4 – The Pedals

  1. Check the pedals to see which one is right and which is left.
  2. Remove the protective foam from the crank arms, located at the bottom of the bike.
  3. Screw in the pedals and use the 17mm wrench to help tighten it.

5 – The Fender

  1. Remove the protective foam from the down tube and from the fender.
  2. Remove the little knot located between the front light and the wheel.
  3. Slide the fender in from the back and attach the knot back. Use the 10mm wrench and 5mm Allen hex key to tighten the fender properly.
  4. Attach the fender legs to the bottom of the fork.

6 – The Saddle

  1. Undo the seat clamp and insert the seat.
  2. Adjust according to your waist.
  3. Close the seat clamp to hold the seat.
    Note: If the seat is a bit loose, then the seat clamp needs to be tightened. There is a screw on the side of the clamp, where you can do this, and do that only when the seat clamp is open. Don´t tighten it too much, as you have to be able to close it.

7 – Adjust the handlebar

To adjust the height look at where the two parts of the stem meet. You will see a screw going downward toward the fork. Choose the height you would like and then tighten the screw to secure the fixed position. Make sure that the handlebar is aligned with the front wheel.

To adjust the handlebar angle, slightly unscrew the four bolts and adjust the angle to your liking. Tighten them thereafter.

To adjust the angle of the stem, simply look below it. You will see a screw underneath. As well as two on the sides of the stem.

  1. Unscrew the bolt below, but not all the way out. Use the 4mm Allen hex key for this.
  2. Then slightly unscrew the two bolts on the sides and not all the way out.
  3. Now you should be able the adjust the stem up and down.
  4. Tighten the bolts back in again.

8 – Cable Management

It is very important that the cables are managed correctly.

1. Grab a cable strip and strap it around the cables at the top. Check if you´re able to turn the handlebar with the wheel by at least 90 degrees.
2. Secure the brake cable and motor cable from the inside of the bike. You will notice small hangers on the inside of the fork. Use these to secure the wires with cable strips.
3. Connect the motor cables, and screw them together. Make sure that the cable coming from the motor is secured correctly and use more cable strips if necessary. It is very important that it is not exposed to the brake disc or the wheel, as it could damage it.

9 – Air

Pump up the wheels with air.

10 – Brake alignment

Make sure that the brake is properly aligned. You can test this by spinning the front wheel and if you hear a scratchy sound it needs to be adjusted.

1.  Take a 5mm Allen Hex key and slightly unscrew the two bolts that are pointing toward the bike, located at the bottom of the fork.
2. Grab the brake handle and hold it while you tighten the bolts back again.

11 – Final Adjustments

Charge the battery for at least 5 hours before usage.

Take a photo of the number of the keys, in case you should lose them both.

Check the fenders. They might touch the frame, which can create a rattling noise, due to the resonance from the motor.
Push in the fender a bit or get a hold of some thin rubber and place it between the frame and fenders.

It is also possible to adjust the bike stand if you want the bike to stand more upright or lean more over.

12 – Important notes!

Now that you have assembled your new STRØM bike here are some important tips you would need to follow.

1. Be sure that you have tightened the bolts correctly.
2. Make sure you have put on the strips correctly. If any wires are to loose, especially the motor cable, it could result in them getting cut by the wheel and in the worst case getting stuck. If the strips are not put on correctly, the warranty does not cover it.
3. Check if the motor reacts properly. Do this by tilting the bike on the bike stand and holding the “-” button down to activate the walk assist mode or use the speed throttle if you have a US version. Listen after rattling noises or see if something is out of line.
4. Check the Shimano derailleur if it is aligned correctly. It is very important since an uneven derailleur could potentially get stuck in the back wheel.

Use the search function below to search for further instructions, because we have a post for anything.

Welcome to the family and enjoy the ride!

STRØM CITY W Assembly & get ready

Here you will find information on assembly of your new STRØM CITY M, and how to get it ready for the road with tips and tricks to make your ride more convenient.

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