Free Delivery over £30* | Free Click & Collect at Decathlon Stores | 365 Days to Return
Reference : 8558248
Add to my wish list
Product already added

XC 500 Mountain Bike, 27.5" - GX Eagle

User rating
was £999.99 -%


This price includes a recycling fee for electrical equipment and batteries DecathlonDeeeTaxMentionAfterPrice / Since

From To

* Sales from to Until end of stock
* From and limited stock
£999.99 -%
This price includes a recycling fee for electrical equipment and batteries DecathlonDeeeTaxMentionAfterPrice / Since

* From To

* Sales from to Until end of stock
* From and limited stock
Check availability in store
This mountain bike is designed for training regularly and participating in Cross Country (XC) mountain bike races. Choose our high-performance aluminium XC MTB with GX drive train, REBA fork, and 27.5" wheels. This "SWITCH & RIDE" mountain bike is compatible with 3 wheel sizes (27.5", 29" and 27.5" PLUS).

Technical Information


Designed and created entirely in France at the B'Twin Village (Lille), this mountain bike is the fruit of the labours of an expert team of passionate cross-country mountain bikers.
To ensure the best quality, this bike is assembled in our factory located at the B'Twin Village in Lille (France). The winner of the Iron Bike 2018


The SWITCH & RIDE system is easy: a mountain bike frame compatible with 3 wheel sizes.
1/ You add a 2nd or 3rd pair of wheels.
2/ Enjoy all terrains!


Men's or women's mountain bike? The Rockrider XC 500 mountain bike is unisex.
For greater comfort, the women on our mountain bike team recommend replacing the saddle with the Women's 500 Sport saddle, which is adapted to women's bodies.


Comes in several sizes:
S: between 1.50 m and 1.64 m
XL: between 1.65 m and 1.74 m
L: between 1.75m and 1.84 m
XL: between 1.85 m and 1.95 m
If your height is on the cusp of the 2 sizes, we recommend the bike that matches your height exactly.


The stiff, lightweight ROCKRIDER XC frame has optimised geometry for physical performance.
It has been designed with shorter bases to leave space for wide tyres.
Made of 6061 and 6013 variable thickness aluminium.
Lifetime warranty on the Switch And Ride frame, single chainwheel only.
148mm x 12mm rear axle.
"Press fit 92" bottom bracket.
31.6 mm diameter saddle tube.
Compatible with double bottle cage (except in size S).
Weight in size S: 1.5 kg.


Make obstacles disappear.
ROCKSHOX REBA RL front suspension with 100mm of travel.
Direct locking front suspension (in open or closed position) on the handlebar using the COMBO LOCK handle.
Suspension compatible with 29" and 27.5" PLUS wheels.


This mountain bike has no rear suspension.


Stay focused on your effort with this single chainwheel and SRAM Eagle technology
SRAM EAGLE GX drive train, 1x12 single chainwheel, for lighter weight, more precision, faster gear changing, and greater durability.
Easily replaceable 34 tooth chainwheel (limited to 36 teeth)
SRAM PG1230 cassette with 12 cogs: 11, 13, 15, 17, 19, 22, 25, 28, 32, 36, 42, 50 teeth. The 50-tooth sprocket guarantees good gear reduction to help you climb the steepest sections


Keep stable and find your attack position.
The Rockrider Comp Flat handlebar is 720 mm wide for more stability.
B'Twin Comp stem, resized for each frame size (60 mm in size S, 70 mm in size M, 80 mm in size L, and 90 mm in size XL).
Semi-integrated headset with sealed bearings.
Lightweight, "lock on" style Rockrider 900 grips that screw onto the handlebar.


Enjoy greater comfort when pedalling.
The ROCKRIDER XC / AM saddle weighs 265 g. Reinforcements plus the Ergofit system for added comfort. The seat post is 31.6 x 400 to allow compatibility with telescopic posts.


The choice of double hydraulic disc brakes for incisive braking.
Exclusive SRAM Level T hydraulic disc brakes with a harmonious collar at the handlebar.
180 mm front disc, 160 mm rear disc.


27.5" SWITCH & RIDE wheels: great manoeuvrability and energy!
Sun Ringle Duroc 30 SRC Tubeless Ready wheels, with Boost axles, 15 mm at the front and 12 mm at the rear.
Inner rim width: 30 mm.
Sealed bearings.
Equipped with a watertight rim strip that is Tubeless Ready compatible.
To switch to Tubeless Ready: add a Tubeless valve, preventative liquid, and replace the original tyre with the same model in Tubeless Ready (available in Decathlon stores).


Grip and move over all types of terrain.
HUTCHINSON TORO 2 27.5 x 2.25 tyres.
Versatile tyre designed for rides on all types of terrains, smooth, rocky, dry, muddy...
Special studs to optimise steering, and sufficiently well spaced out so that they don't get clogged with mud when riding on muddy ground.
High side lugs provide good grip in turns.


The bike is supplied with B'Twin Flat Pro platform pedals. However, for better pedalling performance, we recommend replacing them with platform clipless pedals (not included).


The front and rear wheels attach and remove in 1 motion: you just need a hex key (size 6).
The rear derailleur has a screed that locks and unlocks easily to easily attach or remove the rear wheel.


11.2 kg in size S, without pedals.
11,4 kg in size M, without pedals.
11.5 kg in size L, without pedals.
11.7 kg in size XL, without pedals.
Weight can vary based on the tolerance of the components. The bike is supplied with B'Twin Flat Pro platform pedals.
The complete bike (MTB + fully equipped rider) should not exceed 120kg.


Your ROCKRIDER XC 500 mountain bike is SWITCH & RIDE. It is compatible with 3 different wheel sizes: 27.5", 29" and 27.5" PLUS.
Enjoy a range of difference experiences using the same frame and components! With the 3 different ready-to-ride wheel kits, available in Decathlon stores, one bike becomes three bikes with three different experiences!
This mountain bike is compatible with a bottle cage (side or others).


Your bike's components (chain, derailleur, brakes, etc.) will adjust during your first few rides. We offer free servicing for the first 6 months following your purchase, during which time our technicians will perform a 13-point inspection of your bike.
Check out our tips on handling your bike:

See more See less

Composition / advice

100.00% Aluminium
Care instructions: Rinse in clean water after use.
Stock advice We recommend storing your mountain bike in a cool, dry place, away from corrosive products and salty air.
instructions To get more information about this product, please read instructions

Our commitments

Test Product Please visit your local Decathlon store for any pre-purchase tests.
Guarantee : Lifetime (frame, stem, handlebar). See details on our website. Spare parts: 2 years.

Product benefits

Efficiency Performance: semi-rigid XC geometry, SRAM GX EAGLE 1x12 and SunRingle Duroc 30 w
Lightweight Go faster with its semi-rigid 6013 aluminium frame (1.5kg in size S).
Cushioning Overcome obstacles: ROCKSHOX REBA RL 100mm remote lockout fork.
Braking power Enjoy the powerful SRAM LEVEL T double piston brakes, with 180mm/160mm discs
Lifetime warranty Rockrider lifetime warranty on the frame, stem and handlebar.

Your reviews

Reviews by our Team Members

Our customers pictures

Your reviews

Our services

XC 500 Mountain Bike, 27.5
Maintenance and repair
Maintenance and repair
XC 500 Mountain Bike, 27.5" - GX Eagle
Because you look after your own health, we look after that of your products: tips for initial settings, maintenance and repair advice, video tutorials, FAQs, instructions...
See our tips Spare parts