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Hydraulic disc brakes: Greater efficiency

All Bikes Cycling - Rockrider 520 Mountain Bike B'TWIN - Bikes
Reference : 8293188
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B'TWIN Rockrider 520 Mountain Bike

mountain bike racing and endurance.

To view our full range visit our mountain bikes category.


Please select a size

Please select a size


until £330.00 - %

From £330.00**

DecathlonDeeeTaxMentionAfterPrice /

Price in store £0.00 £330.00 **

Reserve in store

From To

** From To

* Sales from to Until end of stock
** Sales from to Until end of stock

From and limited stock

* Sales price at

From and limited stock

* Sales price at

* From and limited stock
** From and limited stock

Home Delivery
free on orders over £70* - More information

Freedom of Return
find out more about our returns policy.

Safe payment
PayPal, Verified by VISA & MasterCard SecureCode.

Important: When you purchase a bike online, pedals are not fitted and the stem/bars are not adjusted. Please visit this video to see how to correctly set up your bike.

Life Time Warranty: B'TWIN makes the life time warranty for the frames, brackets, stems and rigid forks. Guaranteeing your Bike for life!

Product benefits

    • User comfort
    • Raised position. Lamellar grips. Covered saddle. 100 mm fork.
    • Efficiency
    • Double, hydraulic disc brakes. Forks with lockout feature. SHIMANO 27-speed.
    • Ease of use
    • Lock your fork by hand in an instant.
    • Lifetime warranty
    • B’TWIN guarantees the frame, stem and handlebars for life.
    • Accuracy / precision
    • HUTCHINSON Python tyres: A golden standard in grip and performance.
    • Compatibility
  1. Guarantee : Frame, handlebars and stem have a lifetime warranty. 2-year warranty for parts (excl. wearing parts)

Product information

S:150-165; M:165-175; L:175-180; XL:180-195
Black / White / Red
Wheel size
26 inches
Suspension fork
13.4 kg in S without pedals

your reviews

4.5 / 5

13 reviews

12 people recommend this product

Write a review
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michael bolton


  (United Kingdom)


5 5

Brilliant bike for money. Good solid bike very surprised at price and excellent. Customer service

So far so good


  (United Kingdom)


4 5

Bought this bike from the Coventry store, very friendly service.
Haven't riddern the bike much so far but initial impressions are very good. Feels solid and well made though I have changed the cheapo plastic pedals.
However I am rather miffed, as I payed £369 for the bike on Boxing day and within a month its on sale at £330. Very unfair Decathlon!

Love this bike


  (United Kingdom)


5 5

Bought this bike after reading reviews on here, can't fault it at all smooth ride and gear changes brakes are fantastic. My only gripe is there was no manual or anything when I collected so I don't know how to adjust anything when it's needed .

Response of the brand

If you would like some manuals specifically linked to your product, there is an information page on the website which may assist.
Basic maintenance manual:
MTB manuals linked to some of the parts on your bike:
There is also a page with "how to" guides which are well put together:
I hope this helps.
Peter Lazarus UK Market Manager DECATHLON

very happy


  (United Kingdom)


5 5

The pedals i really dislike and that's it thats the only fault i have found ! Really happy with the bike i live in Madrid and there is a good few cycle paths i have really pushed the bike on. It has coped well a lot of chain slap witch leads me to a question about this product.... can i put a chain tensioner and bash guard on ? Do you sell any thats compatible with the rockrider 520 ??

Very good bike


  (United Kingdom)

Under 20 years old    Man

5 5

used for 2 to 8 weeks Had bike 2 months and have put 100 mile on it. Although it did need a new chain as the old one snapped but got fixed under warranty

Technical Information

  • 1

    Frame BTWIN SPORT MTB frame, in strengthened 6061 aluminium.
    Sports geometry, perfect for racing and endurance cycling.

  • 2

    Fork Rockrider XCR 100 mm lockout fork by SR Suntour.
    Lightweight and durable hydraulic fork cartridge.
    Preload adjuster and lockout.
    100 mm travel.
    Magnesium blades.
    The damper finish ensures long-lifetime.

  • 3

    Suspension No rear suspension.

  • 4

    Drive train MIRANDA BETA BLACK aluminium 22x32x42 crankset Shimano X50 front derailleur;
    Shimano ACERA rear derailleur;
    Shimano ACERA 9-speed shifters;
    SRAM PC951 chain;
    PG950 9-speed cassette 11 X 32.

  • 5

    Brakes AURIGA Comp 160 mm, hydraulic disc brakes at the front and rear for greater braking power and precision, even in extreme conditions (e.g. mud).

  • 6

    Handlebars Rockrider SPORT handlebars with oversized diameter: oversized diameter for greater stiffness and more accurate steering.
    Width from 600 mm (S) to 640 mm (M, L and XL).

  • 7

    Stem Oversized Rockrider SPORT stem (oversized diameter), with a 6° rise. Length: 90 mm (S), 100 mm (M) and 110 mm (L and XL).

  • 8

    Steering Aheadset Rockrider SPORT headset, 1⅛".

  • 9

    Saddle Rockrider SPORT LIGHT saddle.

  • 10

    Seat post Rockrider SPORT seat post: diameter 29.8 mm, length 350 mm.

  • 11

    Wheels RIGIDA SPHINX 32-hole, double-walled rims.
    Watertight Formula DC19/DC22 disk ready hubs,
    2 mm diameter stainless steel spokes: resistant to shocks and corrosion.

  • 12

    Tyres Hutchinson Python tyres with versatile profile: a market benchmark.

  • 13

    Pedals Wellgo MTB platform pedals with toe-clip for holding the foot firmly in place.

  • 14

    Accessories Possibility to add accessories (bottle cage, mudguards, bag under the saddle, pannier rack at the rear, etc.).

  • 15

    Weight 13.4 kg in size S without pedals.

  • 16

    Electric assistance No electric assistance.

Information / Concept / Technology

Stock advice

Store in a cool, dry place, away from corrosive products and salty air.

Care instructions:

Grease your chain regularly and check your tyre pressure often (recommended before each outing). Check your housing every three months and ensure screws and nuts are well tightened.

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