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ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
ST520 V2 27.5 Mountain Bike

ROCKRIDER

8583819

ST520 V2 27.5 Mountain Bike

$450.00
4 reviews
3 of 4 people recommends this product
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST520 V2 27.5 Mountain Bike
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
  • ST 520 27.5" Mountain Bike - Women
ST520 V2 27.5 Mountain Bike
Size :

Store Availability

This 27.5 MTB is designed for 2 to 3 hour MTB rides in any season.

BENEFITS

Cycling comfort

Enjoy touring: raised position, 80-mm suspension, hammock saddle, Flex seat post

Directional control

Control your trajectory: mechanical disc brakes and tires with side knobs.

Efficiency

Smooth riding: light aluminum frame, 24 speeds, and fast-rolling tires.

Durability

An ultra-strong MTB: welded saddle and double-walled rims.

Lifetime warranty

Rockrider offers a lifetime warranty on the frame, handlebars, and stem

TECHNICAL INFORMATIONS

What size mountain bike should I choose?

Several sizes available:
S: 1.50 m to 1.64 m tall
M: 1.65 m to 1.74 m tall
L: 1.75 m to 1.84 m tall
XL: 1.85 m to 2.00 m tall
To adapt the bike to your height and size, try these tips:
1. You should be able to touch the ground with the tips of your toes when sitting on the saddle.
2. When your foot is on the pedal in the lowest position, your knee should be slightly flexed.
3. If you’re between two sizes, choose the larger size.

Unisex frame

With a steep top tube and a wide range of sizes (from S: 1.5 m to XL: 2 m).

The ST520 mountain bike frame is unisex.

The ST520 mountain bike comes in a women’s version: adapted seat, narrower handlebars, shorter stem, fork with a more flexible spring, and brake levers that are closer together.

If you’re a woman choosing the men’s model, we recommend purchasing the women’s 500 Sports Saddle, which is specially designed for the female form.

A word from our team

The ST520 mountain bike was fully designed and developed by our passionate MTB team at the Btwin Village in France (Lille).

The mountain bikers we talked to expressed their need for control so they can take more risks and continue to improve their technical skills. With that as a starting point, we designed and tested the ST520 mountain bike, involving MTB riders at every stage.

A light, comfortable frame

Our designers created a frame that’s easy to mount.

The Evo CGF frame (Comfort Geometry Frame) is 100% aluminum for greater comfort. Its top tube angle keeps your back straighter.

Front suspension

The 80-mm front suspension helps you get started with overcoming obstacles on slightly uneven trails.

Easily adjust the hardness using the U-Fit technology (weight adjuster). Simply set the number to your weight using the dial on the fork.

Rear suspension: none

This mountain bike has no rear suspension.

It’s a “semi-rigid” mountain bike: perfect for beginners launching themselves into their first mountain bike touring rides.
Compared to a full-suspension mountain bike, the advantages are clear: this mountain bike is lighter and less energy is lost on level ground.

Derailleur and drivetrain:

3 x 8 speeds for 24 speeds in total!
Two shifters on the handlebar.
Left (chainrings): control ascents/descents.
Right (speeds): more precise control of your pedalling.

In detail:
-Rockrider FC ATB 500 triple chainring - 22/32/42 teeth
-Shimano Altus front derailleur
-Microshift RD-M46-L rear derailleur
-Microshift TS39 shifters
-Shimano 8-speed cassette (11-32 teeth)
-KMC Z7 wide, sturdy chain

Handlebar, stem, and grips:

The adjustable stem brings the ST520 controls close to your hands. The all-aluminum Rockrider stem is 70 mm (size S), 80 mm (size M/L), or 90 mm (size XL) and can be raised to five adjustment intervals: + 0 mm, + 7.5 mm, + 15 mm, + 22.5 mm, + 30 mm.
In detail:
-680-mm oversized Rockrider aluminum handlebar
-Rockrider “soft touch” ergonomic grips for good traction and a comfortable feel.

Saddle:

The ST520’s welded saddle prevents saddle movement as you cycle.

Because your comfort is our next priority after safety, we’ve added an exclusive wider, hammock-shaped Ergofit saddle.

Easily adjust the height of your saddle with the Flex steel seat post (350 mm or 400 mm depending on the bike size). Its smaller 27.2-mm diameter gives your seat natural flexibility—30% more than a standard saddle.

Mechanical disc brakes:

The Tektro TKD 68 double disc brakes provide powerful, progressive braking at the front and rear. The aluminum Tektro brake levers are light, precise, and easy to hold. The brakes can be applied using only two fingers.
We recommend having your brakes checked at least once a year.

27.5 wheels and tires for dry terrain.

The 27.5 wheels of the ST520 are resilient and sturdy, with 19-mm double-walled rims with 28 spokes. Overcome your first obstacles without fear: small rocks, cracks, holes, and bumps!
Because your first tours will be on dry ground, the Dry 27.5x2.0 tires are most suitable. They have excellent performance thanks to the rounded central section, while the side lugs give you good grip on turns.

Platform pedals:

The Rockrider ST520 mountain bike comes with flat mountain bike pedals made from hard resin for lighter weight and greater safety.
Since your feet can slide off the pedals when needed, there’s less risk of injury.

The pedals on the ST520 are compatible with toe clips.

Transport and storage:

We added a quick-release system for easily attaching/removing the front wheel.
Tip: a bike rack is an easy way to transport your mountain bike without getting your car dirty.

Accessories:

Your ST520 mountain bike comes with a bell, lights, wheel reflectors, and pedals.
The frame is compatible with:
-Front and rear mudguards
-Stand
-Bottle cage
-Saddle bag
-Rear pannier rack
-Child seat
etc.

Comfort and safety

Your bike’s components (chain, derailleur, brakes, etc.) will adjust over time. Take advantage of a free servicing within 6 months after purchase. Our technicians will carry out a 13-point check of your bike. Just come to your nearest Decathlon workshop with your Decathlon card and/or receipt.

Legal disclaimer

To make components last longer, we recommend a maximum load of 120 kg (rider and MTB included).

Reviews

3/5 4 reviews
3 of 4 people recommends this product
Brilliant bike
Muhammad (United Kingdom) Used for
I strongly recommend this bike it’s good for long distance good in the woods and it’s also good for the road. So I recommend this product.
Best bike I ever had
Florentin George (United Kingdom) Used for
I bought 2 of this bikes,one for my daughter and one for me.From the age of 3,my daughter got a bike every year from various shops,she is now 10.The main reason why I bought them was that you cannot find a mountain bike with all these specs, aluminium body,flappy paddle gear changer that are so ease to use by kids,disc brakes,at this price.But the reason I am writing this review is the share with everybody the joy of riding such a bike, we have them for 2 years and used them as mountain bikes, going from Thetford forest to Swinley forest,the Mecca of MTB in England ,to North Wales,and I want to say that the amount of punishment these bikes can take is unbelievable. They never failed us,I never had to fix anything. We also used them as City bikes and they excell there too.We are so quick in writing a review about a bad product but never about a good one.I love these bikes and they deserve the title,Best bikes ever!
More corners cut every version
Scott (United Kingdom) Used for
I bought the original Rockrider ST520 for my son 3 years ago and it came with an SR Suntour front fork, pretty decent SRAM gears and Hayes mechanical disc brakes, this new version has been fitted with a generic Decathlon own brand fork, garbage Microshift rear mech and garbage Tektro disc brakes, they have however fitted a Shimano Tourney (absolute cheapest Shimano part) front mech just so they can advertise it as being "Shimano equipped" which is a joke.

And to add insult to injury this version is £30 more expensive than the one I bought.

I was going to buy another ST520 for my other son but won't now after seeing the parts fitted.

Decathlon like to talk a good game about their bikes but if they keep cutting corners whilst either keeping prices the same or raising them then they've lost all credibility as a bike brand.
missing parts of bike ( no pedals no lights)
Mouhanad (United Kingdom) Used for Verified purchase What is a review "Verified purchase" ?

Where review is marked as "Verified purchase" confirmed by Decathlon, this means that we could verify that the client who filed this opinion has purchased the product from us.

We can confirm purchases for the reviews expressed on a request by e-mail after purchase or when the customer has this review from his personal space.

If review is not marked as "Verified purchase", this does not mean that the author's review has no experience with the product may have given his review directly on the site without unique identification, or the product has been offered or paid.

The label "Verified purchase" lets help you judge the reliability of a review.
just received the bike today looks nice and want to use but am missing the pedals and lights
now i cant use it as no pedals delivered to myself and cant get any reach of customer service due to the traffic.
can anyone contact me or give me any direct contact to solve this issue the soonest urgently
only gave this rate due to the above missing not about the product itself
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