How to assemble a Fixie / Single speed?

This guide concerns the assembly of these bikes:

Congratulations on your new bike! We thank you for your trust in our product. We assure you that the assembly and the maintenance will bring you years of pleasure.

So read this guide carefully and keep it for future reference.

This guide has been designed to help you in the assembly of your bike but it is not a complete guide to bicycle maintenance and repair. The cycle you have purchased has a complex set of parts, which must be properly assembled and maintained for safe riding.

Feel free to see a professional bike mechanic to assemble your bike.

Improper assembly or maintenance of your bike can lead to serious injuries.


Read the following the instructions to ensure your safety while driving.

  1. It is the responsibility of the owner or his / her parents in the case of a minor to ensure that all assembly instructions have been followed even if it has been assembled by the seller or a professional rider.
  2. Brakes are essential for safety, make sure they work before use of the bike. They do not require any special maintenance.
  3. The rules for using a cycle on public roads change from country to country, make sure you know and understand these rules. In France, for example, it is mandatory to have front and rear reflectors.
  4. Learn how to use your bike and its equipment. This rule applies to everyone who uses a bike.

For your safety we recommend wearing a helmet while riding.

The helmet must be :

  • Comfortable
  • Lightweight
  • Aerated
  • Your size
  • Protect your forehead

Helmet can save your life.

See our collection of bike helmets.

Different parts of Single speed

Few tips before riding...

  1. Caution on and off roads: the condition of the surface(road) on which you ride matters alot. If the surface is wet or scattered with debris (sand, small pebbles..) adjust your speed and ride with caution. The braking distance will be greater, brake earlier and less hard to avoid slipping the wheels of the bike.
  2. We recommend long sleeves and trousers with gloves and helmet. Nevertheless, avoid too loose clothing that could get caught in the chain.
  3. Avoid anything that may limit your hearing.
  4. You are not exempted from the highway code, respect the various signals and signs. Be attentive to other users (pedestrians, cars or parked cars)
  5. Use your hands as a signal to inform other users of your movements.
  6. It is dangerous to drive at night without lighting equipment, we strongly recommend you to have one. See our collection of bike lighting.
  7. And the list goes on.


Each bike has a unique serial number stamped under the bike.

This number will help you identifying your bike.

NOTE : This information is only available on your bike. The seller can not provide it to you.


After few basics, we come to the most important part of. To do this you will need a number tools.

 Free Wheel assembly
Fixed-gear assembly

After carefully removing the various components from their boxes, carefully remove the different protections. Try not to damage anything during the operation.

STEP 1 : Install Seatpost and Saddle

  1. Start by greasing the seat tube.
  2. Insert the seat post into the seat tube.
  3. Tighten the clamp lightly with a 5 or 4 allen wrench.
  4. Adjust the angle of your saddle by loosening the seat saddle screw with a hex wrench of 6, when it is in the ideal position according to you, tighten the screw.
  5. You can adjust the height of the seatpost thereafter.

STEP 2 : Install the Stem

This step only applies to BLB bikes, go directly to Step 2B if this does not concern you. (Plunger stem)

  1. Loosen the screw of the expander with 6mm hex wrench , if necessary, to ensure alignment of the blocker and the stem body.
  2. Insert the clamp and stem into the steering tube until the minimum insertion line is no longer visible.
  3. Rotate the stem to align it with the front wheel, making sure that the fork is in the correct direction (it must point to the front of the bicycle).
  4. Tighten the screw of the expander (clockwise). Recommended torque is 20Nm

STEP 2B : Install the handlebar

  1. Unscrew the clamping screw(s) from the stem with a 4-way wrench to remove the cover.
  2. Insert the handlebar into the bracket making sure not to cross the brake cables.
  3. Position the handlebar as desired and tighten the screws (torque 6 Nm), note that there must be a same distance between the hood and the stem at the top and bottom.

STEP 3 : Install the Front wheel

  1. Loosen the 2 wheel nuts with a 15mm spanner.
  2. Insert the hub axle into the fork.
  3. Using the two 15mm spanners, tighten the front wheel nuts simultaneously (clockwise) to torque of 30 Nm.

STEP 4 : Retighten the Crankset

Using an 8mm allen wrench, tighten the two screws (clockwise) linking the cranks and the crankset.

Recommended torque is 30 Nm.

STEP 5 : Greasing and installing the pedals

  1. Differentiate the right pedal (denoted R as right) and the left pedal (L).
  2. Grease the screw thread of each of your pedals.
  3. Screw (clockwise) using the pedal key (or 15 mm flat key) the right pedal on the right hand crank (marked R).
  4. Screw (anti-clockwise) the left pedal on the left crank (denoted L).
  5. Recommended torque is 30 Nm.

STEP 6 : Tightening Sprocket and Lock-nut

This step is necessary if you want to mount your bicycle in fixed gear, these parts requiring a manual check for their tightening.

  1. Using a 15mm spanner, loosen the two nuts on the rear hub.
  2. With a 3 or 4mm allen wrench loosen the two chain tensioner screws, the chain should then relax, remove it from the crankset and finally the rear sprocket, then you can remove the rear wheel from the rear legs of the bike.
  3. Use the chain whip to tighten the sprocket (clockwise) and locknut (counterclockwise) to 50 Nm torque.
  4. You can then install your rear wheel again in the rear legs. Do not forget to replace the chain. We will see in the next step how to set this one.

STEP 7 : Adjust Chain tension

The chain is an element that will naturally relax by the efforts it undergoes. During the life of the bike it will be necessary to control its tension regularly.

  1. Using two 15mm flat wrenches, loosen the nuts on the rear hub.
  2. If you have chain tensioning screws, refer to paragraph 3. Otherwise, pulling the rear wheel toward the rear, tension your chain.
  3. Using a 3 or 4mm allen wrench, tighten the two chain tensioning screws gradually until an acceptable voltage is reached (see below). Through the unique adjustment of each chain tensioner screws you can center the tyre between your stays.
  4. You can then tighten the clamping nuts of the rear hub using two 15mm flat wrenches tightening with 30 Nm. torque.

When properly tightened, the chain must be able to move vertically by about 10mm when pressed in the middle of the chain.

STEP 8 : Tyre Inflation

  1. Unscrew the cap from the inflation valve.
  2. Push the valve to the bottom of the tyre (loosen the small ring on the valve if necessary).
  3. Unscrew the valve shell.
  4. Connect the pump to the valve and inflate your inner tubes. Make sure that the inflation is homogeneous, we advise a pressure of 5 bar at the front and a pressure of 5.5 bar at the rear.

STEP 9 : Install the Caliper and Brake levers

If they are already set, proceed to the next step

  1. Using an 5mm allen wrench, loosen the screw behind the bracket.
  2. Insert the calliper fixing screw shaft into the hole provided.
  3. Tighten the chimney screw.
  4. Loosen the clamping screw of the brake lever clamp with a 5 or 4 allen wrench.
  5. Attach the brake lever clamp to the handlebars so that it can be operated with your fingers in the desired position on your handlebars.

STEP 10 : Adjust the Brakes

For Front brake calliper, check that your brake callipers are nicely fastened and then tighten the chimney screw if necessary.

  1.     With 5mm allen wrench loosen the cable retaining nut.
  2.     Place the brake pads on the rim, and holding them in a position, pull the cable down and tighten the fixing nut.
  3.     With the brake pad screw, adjust the height of the brake pads so that they are in contact with the brake band (upper part of the rim).
  4.     Carry out the same operation on the rear brake calliper.

STEP 11 : Adjusting the Stem

This step concerns bicycles with a head set: 6KU, State Bicycle, Pure Fix. The purpose of this step is to verify the bike's heads

  1. If a clearance is present, slightly loosen the pivot screws using a 5mm allen wrench and tighten the upper screw to compress the headset and reduce the clearance.
  2. When the clearance has disappeared, tighten the clamping screws on the pivot, making sure that the stem is centered on the front wheel.

STEP 12 : Adjust the height of the Seat

  1. Adjust the height of your seatpost (see step 1) according to the position you wish to adapt on the bike, you must feel comfortable.
  2. Be careful not to exceed the minimum insertion line.

STEP 13 : Install the Reflectors

Using the clamps supplied with the reflectors, attach the reflectors to the handlebars and the seat post (white on the handlebars and red on the seatpost)

STEP 14 : Test

Your bike is finally assembled, it's time to test it. Without rushing.

You have just mounted your bike by yourself, we strongly advise you to have it checked by a bicycle professional .



In this section you will find instructions that are not part of the assembly, but they are information about the components of your bike and how they work.

Flip-flop hub and quick coupler

Flip-flop hub and quick release

The quick release makes it easy to disassemble your wheel.

It closes and opens according to the positions shown in the diagram opposite.

The flip-flop hub allows you to switch from singlespeed to fixed (fixed gear). Follow the instructions in the diagram below if you want to do this.

From a fixed gear assembly to a freewheel :

Installation of Kickstand

Classic Fixing

The top tray may already be on your bike model

  1. Turn the bike over.
  2. Place the stand on the left side of the bike on the opposite side of the transmission assembly.
  3. Install the stand by tightening the nut.
NOTE : The kickstand is made to support the weight of the bike only, it is not made to support the cyclist and the bike.

Rear kickstand

  1. Place the bike against a wall such that the left side of the bike remains exposed.
  2. Unscrew the clamping nut from the rear hub using a 15mm wrench.
  3. Insert the hub axle into the hole in the clamping plate of the kickstand.
  4. Tighten the clamping nut by adjusting the orientation of the plate.

Be careful, the kickstand is made to support the weight of the bike only, it is not made to support the cyclist and the bike.

Maintenance and control

This guide is made up of advice and does not constitute a reference for the maintenance of your bike, do not hesitate to call a professional in order to have your bike reviewed and maintained.

Proper maintenance of your bike will ensure greater durability and safety during your rides.

Lubrification of your components

Frequency Component Lubricant How
Weekly Chain
Brake lever
Lubricant for chain
Spray in length
2 drops
Every 6 months Free wheel Oil 2 drops
Every year Pedals
Seat post
Ball bearings
Lithium grease
Lithium grease
Lithium grease
Lithium grease

Dismantle then grease
Dismantle then grease
Dismantle then grease

Dismantle then grease

Verify the components

Frequeny Task
Before every ride Verify tightening of the wheels and pedals
Verify tyre pressure
Verify brakes
Verify wheel spokes
After every ride Wipe with a damp cloth
Monthly Check clearance in hub, headset and ball bearings
Check the fastening of the seat clamp
Check the handle
Check all the nuts and bolts are nicely tightened
Every 6 months Verify the chain
Verify the brake pads

Overview of various problems and possible reasons

Problem  Possible reason
Chain derail - Chain worn out
- Non compatible sprocket, chain and crankset
- Broken sprocket chain
- Retain or replace the chain
- See a bike expert
- Change the sprocket
Noise during pedalling(clinking) - Rigid chain link
- Loose crankset
- Clearance in the ball bearings of the pedal
- Lubricate or change the chain
- Retighten your crankset 
- Adjust the clamping nut of the bearing
Blocked Free wheel - Freewheels clapms locked - Lubricate, still facing problem change the free wheel
Non-functional brakes - Brake cables damaged / too tight
- Worn brake pads
- Replace / adjust brake cables
- Replace brake pads
Noisy brakes - Worn brake pads
- Dirty or well brake pads
- Brake calliper arm
- Replace brake pads
- Clean the brake pads
- Tighten the calliper with an adjusting nut


This warranty applies only to the original buyer, who must be able to provide proof of purchase to validate any complaint. This warranty is not transferable.

What does this warranty cover? This warranty covers all components of the bicycle in order to avoid material and finishing defects.

How to keep this warranty active? The guarantee is effective only if:

- The bike was correctly and completely assembled.

- The bike was used under normal conditions for which it was designed, by a person of size appropriate to the bicycle and able to control the bicycle.

- The bicycle has received maintenance and necessary adjustments.

What is not covered by the warranty? This warranty does not include labour and transportation. This bike has been designed for transportation and recreational use only. This warranty does not cover usual wear and tear, paint damage, rust, worn out parts, personal injury or any other damage, loss, accident, incomplete assembly, improper maintenance, inappropriate storage, misuse of the bicycle.

The guarantee will be cancelled if the bicycle:

- is used for competitive use

- is used to jumping, acrobatics or any other similar activity

- is equipped with a motor or otherwise modified

- is mounted by more than one person at a time

- leased or used for commercial purposes

- used in a manner contrary to the instructions given in this manual

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