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

All Bikes Cycling - Rockrider 500 Mountain Bike B'TWIN - Bikes
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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.


Please select a size

Please select a size


until £239.00 -21 %

From £189.00**

DecathlonDeeeTaxMentionAfterPrice /

Price in store £239.00 £189.00 **

Reserve in store

From 14/10/2015 To

** From 12/10/2015 To

* Sales from to Until end of stock
** Sales from 12/10/2015 to Until end of stock

From and limited stock

* Sales price at

From and limited stock

* Sales price at

* From 14/10/2015 and limited stock
** From 12/10/2015 and limited stock
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From : 09/02/2016 with this item
Reference : 8293150

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.

Our customers pictures

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.
    • 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

4.4 / 5

48 reviews

43 people recommend this product

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BTWIN Rockrider500................ Thoughts


  (United Kingdom)


5 5

Well made bike.It handles the track i use well. Off road through woods and on rough type one tracks naebother. First time i have used, s ram gears they are standing up to what i am doing so far.

500 Plus

High spec, lightweight, good value



  (United Kingdom)


5 5

used for 2 to 8 weeks Well balanced and good gear ratios. Exceptiobal value for money

Rockrider 500 Hardtail

Much lighter than my last bike!!

None so far


  (United Kingdom)

30-39 years old    Man

5 5

used for 1 week or less After over a year of having no bike I decided I wanted to get back into cycling and join a few friends of mine. Initially I was going to buy a 2nd hand bike but then I saw the Rockrider 500 at a mere £189! Excellent spec for the money. Favourite thing about it is the rapid fire gears as opposed to grip-shift gears (which in my experience are horrendous!) First run out tomorrow morning, can't wait! :)

Great value


  (United Kingdom)


5 5

Bought this on a whim. Very well built, has taken even thing I've thrown at it so far. I have changed a few items on it, but this is down to personal preference, such as pedals (I need gripper flat pedals for how I ride), and bar grips, again due to how I ride, I wanted more comfortable ones. All in, very impressed with it for a cheap bike. I actually prefer it to a Much more expensive cannondale I used to ride.

Second time buyer

Attractive look, good weight, good gear ratio

Saddle a bit too hard, shoe holders too small.


  (United Kingdom)

+60 years old    Woman

4 5

used for 2 to 8 weeks Purchased for my husband. 2nd time we've bought this model so pleased overall with price and quality. Delivered to home for assembly but the 'Bike Assembly' leaflet was missing as was the 2 year parts guarantee ticket along with free 3 month service reminder. Also no form on which to record frame and serial numbers.
Could not get one pedal to screw on and needed to visit nearest store for help so that was disappointing and time consuming.

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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