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Suspension frame, fork with lockout, disc brakes.

All Bikes Cycling - Rockrider 500 S Full Suspension Mountain Bike B'TWIN - Bikes
Reference : 8208677
All Bikes

B'TWIN Rockrider 500 S Full Suspension Mountain Bike

mountain bike racing and endurance. Make yourself comfortable!

To view our full range visit our mountain bikes category.


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Product benefits

    • User comfort
    • 120 mm front and rear travel.Raised position. Polyurethane saddle.
    • Efficiency
    • Aluminium frame. Double disc brakes. Forks with lockout feature. Hybrid tyres
    • Ease of use
    • No-tool suspension stiffness adjustment. Lockout the fork in an instant!
    • Lifetime warranty
    • B’TWIN guarantees the frame, stem and handlebar for life.
    • Accuracy / precision
    • Disc brakes provide powerful braking in all weather conditions. SHIMANO gears.
    • Ease of use
  1. Guarantee : Frame, handlebar and stem have a lifetime warranty. 2 year guarantee for parts (excl. wearing parts)

Product information

S (155-165cm), M (165-175cm), L (175-185cm) & XL (185-195cm)
Wheel size
26 inches
Fork and shocks
14.9 kg in size S

your reviews

4.6 / 5

19 reviews

17 people recommend this product

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Highly under-rated trail bike.

Under-rated suspension. Strong frame. Good Geo.

Gears are mediocre, Seatpost clamp is weak.


  (United Kingdom)

Under 20 years old    Man

5 5

used for 2 to 8 weeks I really like this bike a lot because although it's advertised as an XC bike. I've taken it down Am and more freeride style trails which it can handle surprisingly well (if you have the skills to ride it properly and don't crash it!).

The suspension and frame I've found to be very good for the price. I've hit some big jumps and drops on it and the 120mm of travel just soaks up everything. BikeRader say the frame is slightly flexy but I would definitely not agree with that. It's very strong and it will give you lots of confidence to go fast out on the trails. The swing arm hanger feels really solid when going over technical terrain. The Kenda tyres are actually really sticky, even in the wet. I've been able to over take £1000 Vitus and Kona bikes on this!

There are things that could be better. The seatpost clamp broke apart in my hand when I was raising the seat (it's really weak). The gears have been mediocre. Smooth but the middle chain ring sometimes rubs the chain. The middle derailleur sometimes doesn't work at all. The brakes could be better I think. I also feel the stem is very long for this bike and I think a shorter one would be much better. The grips are starting the slip a bit.

Apart from those little things. It's a really brilliant XC-Trail bike for if you want a decent full susser but don't want to pay £700-£1000 for one. Jumps well. Handles steep decents well (might change stem). The Geometry is surprisingly good for going up and down trails. You can really just drop the seat and shred through fast, jumpy and flowy singletrack nicely on this bike. If you have the skills, you can go faster than guys on £1000 full sussers. Good job Decathlon!

Now go make a 160mm travel freeride bike!

Rockrider 6.3 (2008l) vs Rockrider 500S (2014)

Great suspension, amazing handling, disk brakes.

Numb bum seat.


  (United Kingdom)

+60 years old    Man

5 5

used for 1 week or less I own one of the original Rockrider 6.3s and have just bought my wife its modern successor, the Rockrider 500S. Its is not as well specced as my old bike, but for the price it is still a great buy.
You may have read that the original like mine was considered outstanding where as the current model is just average and ask why?
The following are different:
Rear suspension geometry,
Rear Shock unit
If you want a bike that will soak up all you can throw at it consider buying the next model up.
If you want something that is just fun, fun, fun, the new model is still absolutely excellent.

rock rider 500 s


not found any yet


  (United Kingdom)

40-49 years old    Man

5 5

used for 2 to 8 weeks Comfortable to ride, OK so it weighs 14 kg but that's not a bad thing, great for downhill and really rough ground, think I've tested it to the max in two weeks, and still great, love it, well worth the money

Brilliant Bike for the money

As good as bikes costing twice as much

nothing, a fantastic bike


  (United Kingdom)

Under 20 years old    Man

5 5

used for 1 week or less Brilliant Bike for the money, quality of frame and components for this price is outstanding, as good as bikes costing twice as much, would highly recommend this bike to anyone who want's a well made good quality bike for everyday use.

very easy to ride

comfortable, light and looks very nice.

after a couple of days the chain keeps sliping


  (United Kingdom)

20-29 years old    Man

5 5

used for 2 to 8 weeks i am a beginner, i don't no that much about bikes, but i had a lot of fun with this one. comfortable, light and looks very nice.
But after couple of days the chain kept on slipping. It only happen on the lowest gear. so it is difficult while cycling uphill.

other then that it a great bike

Response of the brand

Dear Sir,

Thank you for posting a review of your b'Twin Rockrider 500 S Full Suspension Mountain Bike.

Regarding the issue your are encountering with your gears, it is not uncommon for bikes to require some adjustment shortly after purchase because the cables can stretch a little resulting in less than satisfactory shifting in some gears.  We offer a free checkup anytime within the first 3 months precisely for this reason so please don't hesitate to contact your local Decathlon store workshop to book your bike in.  If you are unable to visit your local store then there are some great tutorials online which can guide you through the process if you feel confident enough and have the correct tools.

This is a good instructional video on Youtube to learn how to adjust your gears :
This is also a great film teaching riders how to shift gears on mountain bikes which can also help :

Peter Lazarus UK Market Manager DECATHLON

waz found this review helpful

Technical Information

  • 1

    Frame New oversize aluminium 6061 S.I.X frame, 15% tougher and lighter than the previous version. 120 mm rear travel, based on the famous "monopivot" system, which offers great sensitivity to small bumps and remains sturdy under large impacts. System mounted on sealed bearings for good durability. Comfortable geometry and effective steering. Caster angle at 69° for more stability. Weight= 2.7 kg in size M, without shocks.

  • 2

    Fork Rockrider 120mm fork, with adjustable preload (stiffness of inner coil) on the left leg: simple to adjust and easy maintenance. Wide dampers (32mm), for more rigidity. Lockout lever on the right leg, to avoid bobbing on rolling ground (road, smooth path, etc.).

  • 3

    Suspension Hydraulic coil shock, with shock stiffness adjuster. Can be adjusted by hand at any time without tools.

  • 4

    Drive train Suntour XCT 22x32x42 chainset.
    New generation Shimano ACERA rear derailleur: straight, quick, effective and reliable shifting.
    Shimano Tourney front derailleur.
    Discontinuous cabling for lower weight and higher precision. Derailleur levers directly built into the brake levers, for better weight and good integration of all parts on the handlebars. 9 speed SRAM ESP 5.0 cassette, 11x34. SRAM chain with quick-release.

  • 5

    Brakes Hayes MX5 mechanical disc brakes, offer a biting brake that is easy to control. Easy maintenance and adjustment. 160mm front and rear disc. "Postmount" front and rear calliper, screwed directly onto the frame/fork: to reduce weight and make adjustment easier.

  • 6

    Handlebar Oversize 640mm diameter Rockrider Sport aluminium handlebar, for better rigidity and stability on descents.

  • 7

    Stem Rockrider forged aluminium oversize diameter stem, for more rigidity. The components are marked to help you find the best setting.

  • 8

    Steering Semi-integrated A-headset, for better watertightness, precision, and a built-in look. Rockrider mono-density grips, length: 120mm.

  • 9

    Saddle New Rockrider by Selle Royal saddle: injected polyurethane with ventilation and anti-tear coating on the sides.

  • 10

    Seatpost Rockrider 29.8 mm diameter seat post, length: 350mm. Quick, tool-free anodised saddle tightening.

  • 11

    Wheels Rockrider Sport wheels, with 32 hole double-walled aluminium rims: guaranteed shock and warp resistance, and lightweight! Aluminium hub compatible with disc brakes only.

  • 12

    Tyres Front and rear KENDA Nevegal 26x2.10 rigid bead tyre, known for its versatility: behaves well on all types of surface, whatever the weather (dry or wet), thanks to its deep and well distributed tread, and its soft "Stick-E" rubber which provides good grip. Tyres with inner tube.

  • 13

    Pedals Wellgo platform pedals, with strapless toe-clips, for good foot support and the ability to remove your foot quickly should you lose balance.

  • 14

    Accessories Transparent adhesive chainstay protection: your frame paint need not fear!Compatible with bottle cages, a bag under the saddle, mudguard fixed to the diagonal tube of the frame and saddle post.

  • 15

    Weight 14.9 kg in size S

  • 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:

We recommend reading and following the maintenance instructions found in the manual that comes with your Rockrider bike. The maintenance instructions and component settings are available on The safety visit (3 months after purchase) at your local store's workshop is FREE and RECOMMENDED.

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