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The no. 1 sports MTB: alu frame and disc brakes.

All Bikes Cycling - Rockrider 500 Mountain Bike B'TWIN - Bikes
Reference : 8293150
All Bikes

B'TWIN Rockrider 500 Mountain Bike

The b'Twin Rockrider 500 Mountain Bike is perfect if you're looking to get into hitting the trails. With a lifetime warranty aluminium frame, front and rear disk brakes and a SRAM 24 speed drivetrain you can be confident that this bike is built to last.

To view our full range visit our mountain bikes category.


Colour : DARK GREY

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until £239.00 - %

From £239.00**

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Price in store £0.00 £239.00 **

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Delivery Info: When buying a bike online, pedals are not fitted and the stem/bars are not adjusted. View this video to see how to correctly set up your bike at home.

Product benefits

    • User comfort
    • Raised riding position, for efficient, painless cycling. Lamellar grips.
    • Efficiency
    • Aluminium frame: lighter and higher performance. 160 mm double disc brakes.
    • Easy adjustment
    • INNOVATION: adjust the fork to your weight in less than 1 minute
    • Lifetime warranty
    • B’TWIN guarantees the frame, stem and handlebar for life.
    • Accuracy / precision
    • Disc brakes provide powerful braking in all weather conditions. Trigger shifter.
  1. Guarantee : Lifetime warranty for frame, stem and handlebar on this bike. Details on

Product information

XS:135-150; S:150-165; M:165-175; L:175-180; XL:180-195
Wheel size
26 inches
Suspension fork
14.07 kg (XS) without pedals

your reviews

4.6 / 5

23 reviews

21 people recommend this product

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ordering it for delivery

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  (United Kingdom)

30-39 years old    Man

4 5

used for 1 week or less hi i,m wanting 2 get my bike deliverd but want 2 ask r the gears/brakes all set up b4 its put in the box

Response of the brand

Yes, to answer your question, the gears and brakes are set up by our technicians in our online distribution center.
When you remove the bike from the box, you will need to attach the handlebars to the stem and fit the pedals.  We provide tools to help you do this. There is also a short video on each product page to help as well as a short guide in your welcome pack.
Peter Lazarus UK Cycling Market Manager DECATHLON

Cracking Value for Money First MTB

Good all round package

None for the price


  (United Kingdom)


5 5

Impossible to fault the value for money of this bike. I brought it as a present for my 11 year old son as a first MTB. Yes, it is a little on the weighty side, and the fork lacks rebound dampening, but a bomb-proof frame, 24 gears, full disc brakes and pretty reasonable quality kit for £240 make it a bargain starter MTB, especially for a growing lad who will need the next size up in a year!.

Assembly was a piece of cake (though the supplied allen key didn't seem to fit the handlebar bolts - luckily I have my own).

Their was initially a problem with delivery, but when I explained the need for it to come on time, Decathlon pulled out all the stops and arranged priority next day delivery, so top marks for customer service.

Cant go wrong with this bike for the price

Great value for money



  (United Kingdom)

40-49 years old    Man

5 5

used for 2 to 8 weeks Having not been on a bike for years i took the plunge with the R500 as i wanted a bike to get to and from work on the local loop line i have to say for the price this is a solid bike that has not dissapointed five days a week for the last month roughly 120 miles it has been used for and its as good as the day i first got it very highly recommended and a big thanks has to go to the store members in the warrington branch that helped me in choosing it as well as getting it tuned up and ready to ride thanks a lot guys

Great bike


  (United Kingdom)


5 5

Purchased this bike after viewing many online and at Main Street retailers, not looking to spend a fortune on a bike as I would use it for recreational use i found the rickrider 500 to meet all my requirements. Although a simple mountain bike with no frills is easy to ride the rickrider is well equipped for substatial off road use. The staff were great to provide info on the bike and my own negative comment would be how hard the seat is.



  (United Kingdom)


5 5

Smooth ride, looks fantastic, high number of gears to reach the max speeds, fairly light, friends love it!

Technical Information

  • 1

    Frame BTWIN SPORT MTB frame, in strengthened 6061 aluminium.
    Sports geometry, perfect for intensive mountain biking.

  • 2

    Fork NEW! BTWIN fork, 80 mm travel, with EASY hardness adjustment system: just turn the wheel to YOUR weight indication. You'll be off in a flash!
    High-quality dampers with surface treatment offering remarkably smooth suspension.
    High-quality steering ring mounts to prevent water, dirt and debris entering the blades: much more durable fork.

  • 3

    Suspension No rear suspension.

  • 4

    Drive train SRAM 22x32x42 triple-chainring crankset
    SRAM X4 rear derailleur
    MICROSHIFT M30 front derailleur
    New SRAM shifters with indicators for the 24 gears
    SRAM 11x32 cassette.

  • 5

    Brakes TEKTRO aluminium brake levers: lightweight and precise.
    HAYES MX5 front and rear cable disc brake for: powerful, progressive braking, even in rainy and muddy conditions.

  • 6

    Handlebar Rockrider SPORT handlebars - 600 mm (XS et S) and 640 mm (M, L and XL) wide.

  • 7

    Stem Rockrider SPORT stem, diameter 25.4 mm. Length: 90 mm (XS and S) or 110 mm (M, L and XL).

  • 8

    Steering Aheadset Rockrider SPORT headset, 1⅛".

  • 9

    Saddle Ergonomic B'TWIN SPORT Viper saddle in polyurethane.

  • 10

    Seatpost Rockrider SPORT 29.8 mm diameter seat post.

  • 11

    Wheels BTWIN SPORT double-walled rims, with 32 spoke eyelets,
    BTWIN SPORT hubs,
    Stainless steel spokes, 2 mm diameter: impact and corrosion-resistant.

  • 12

    Tyres 26 x 2.00 SPORT all-round MTB tyres for excellent lateral traction.

  • 13

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

  • 14

    Accessories Compatible with mudguards, bottle cage, bag under the saddle, rear pannier rack etc.

  • 15

    Weight 14.07 kg in XS without pedals.

  • 16

    Electrical 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 tightened properly.

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