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Need help assembling, maintaining or repairing your bike?

Find all our tips, tutorials and videos as well as user guides and spare parts for your RC520 LTD WINTER EDITION bike!

1 / Assembling your bike

Watch our tutorial video and find out how to assemble your bike.

When mounting the stem, make sure you tighten the two screws on top first, as much as you can (6 Nm)

It is important to bed in your brakes the first time you use your bike. This video will show you how to do it:

3 / Maintenance

Find all the info you need to keep your bike in good shape

Essential tools for your workshop.

To maintain your bike correctly, you need to have the right tools.

Cleaning your bike properly

Step 1: Apply degreaser

Step 2: Wash and rinse

Step 3: Apply fresh lubricant

For more information, click on the link below:

What pressure should the tyres on your bike be?

The tyres are the only part of your bike that are in contact with the ground. It's important to minimise the risk of them losing grip, which is why it's important to make sure they are inflated to the right pressure. Check out our advice here:

Tightening the seat post

To set your saddle correctly it needs to be securely in place. A loose seat post can slip when you're out and about on your bike. Conversely, if it's too tight, you run the risk of crushing the seat post and damaging your bike. 


The best way to tighten a seat post is to use a torque wrench. We recommend you tighten it to between 6 and 7Nm.


Take care not to exceed the maximum height indicated on the seat post.

When to change your tyres

Riding around with worn tyres brings the following risks with it:

Loss of grip.

Greater exposure to punctures.

In this article, we'll tell you how to spot a worn tyre:

When to change your chain

The chain is an essential part of your bike's drive train. It is important because it connects the chainset and the cassette. It transfers energy so that you can move forward efficiently, so it needs to be in good condition. This article explains how to recognise a worn chain:

When to change your brake pads

To find out if your pads are worn, check the thickness of the brake lining on the pad. You'll need to change the pads if the lining is less than 0.5mm thick.

4 / Repairs

You're sure to find the answer to your questions in the FAQs

Changing your pedals

Are your pedals broken? Do you want to change your pedals for clipless ones? Here's our advice.

NB: please note that the screw thread on the left pedal is inverted and that the pedal thus screws on in an anti-clockwise direction. The right pedal has a standard screw thread. 

Please use the correct tool to take your pedals off as force needs to be exerted to unscrew them.

Changing your inner tube

If you pick up a puncture, our tutorial will tell you how to change your inner tube.

Changing your handlebar tape

The tape on your handlebar will wear over time and you'll need to change it occasionally.

Your disc brakes are making a noise

If your disc brakes are making a noise: 

- Check that the wheel is properly centred. To do this, loosen the wheel and tighten it up again. 

- Check that the brake calliper is in the right position.

- Check the brake pads for wear.

- Check the tension of your brake cables.


Your bike isn't braking very well

There are several things you can do if your brakes aren't working as well as they used to: 

- Use a degreaser to clean the disc.

- Check the brake pads for wear.

- Check the tension of the cable.

Changing your brake pads

It's important to change your brake pads before they become too worn. It makes for safe riding.

Changing your housings and brake cable

Need to change your brake cables and/or housings?Watch our tutorial.

Your gears are skipping

If your gears are slipping, you need to check the following: 

- Wear on your drive train.

- The tension of the cables.

- The derailleur, to see if it's twisted.

You then need to adjust the derailleur.

The derailleur hanger is broken or bent

If your derailleur hanger is broken or bent, you need to change it. 

Changing your chain

Here's some useful advice on how to change your chain correctly.

Changing your bike cassette

Is your drive train worn? Do you need to change the number of cogs on your cassette? Watch our tutorial to find out how to change your cassette.

Please note: the maximum cassette size for this bike is 11 - 34.

Changing your chainrings

Are your chainrings worn? Do you want to change the number of teeth? It's easy to change your chainrings.All you need to do is use an Allen key to unscrew the screws holding the chainrings in place. You can then fit the new chainrings.The minimum size of chainring for this bike is 34 teeth.

Changing your derailleur housings and cable

Need to change your derailleur cables and/or housings?Watch our tutorial.


6 / Workshop services

You can do all of the procedures described below yourself or you can get your local Decathlon workshop to do them for you. For more information about the services the workshop offers, please click the link below.

7 / Instructions


Haven't been able to fix your problem or find what you need?

Please contact one of our technicians who will be happy to help

8 / Guarantees

  • Our commitment

    TRIBAN provides a lifetime warranty on the frame, handlebar and stem (under normal conditions of use).

    The warranty on other parts is two years.

    When you start using your bike, some of the components may move a little. That's why we offer a free check-up of your bike in the first six months following the date of purchase.