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ROCKRIDER XC 100 Mountain Bike, NX Eagle - 27.5"

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until £849.99 -%


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

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* From and limited stock
£849.99 -%
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
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Ideal for getting started with cross-country mountain biking, the Rockrider XC100 will ensure you make progress with every ride. A high-performance bike, its key features include NX Eagle transmission, 6013 aluminium frame, Manitou’s Markhor suspension fork and a ‘Switch and Ride’ compatibility with three wheel sizes.
  • Lightweight frame
  • Powerful brakes
  • Suitable for both men and women
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We currently have limited capacity to build bikes in our warehouse. Due to this, we are limiting the number of bikes we sell per day. If you are unable to process your order at checkout, please return the following day to make your purchase.


Product benefits

Efficiency Manage effort, semi-rigid XC geometry, SRAM NX 1x12 and 100mm Manitou fork
Lightweight Hit the slopes with its 6013 aluminium frame with XC geometry (1.5kg in size S).
Shock absorption Cushion all impacts: 100mm MANITOU fork with quick-release on the handlebars.
Braking power Powerful brakes with double piston callipers and 180 mm / 160 mm discs.
Lifetime warranty Rockrider lifetime warranty on the frame, stem and handlebar.

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 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 100 is for men and women.
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 was 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.


To overcome any obstacles you encounter, the Manitou Markhor Air fork and its 100mm travel will always be there for you. Quickly lock and unlock the fork with the 2-position Combo Lock locking system on the handlebars.
Suspension compatible with 29" and 27.5" PLUS wheels.


This mountain bike has no rear suspension.


The XC100 uses technologies from the SRAM NX EAGLE groupset. The SRAM NX 1x12 drive train ensures light weight, durability, precision, and better control of your mountain bike
Chainwheel dimensions: 34 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 screw onto the handlebars


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.


Hydraulic disc brakes for incisive and progressive braking.
SRAM Level hydraulic disc brakes with a 180 mm front disc and 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.
27.5 x 2.10 Hutchinson TORO 2 tyres
Versatile tyre designed for rides on all types of terrain: 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.


11.8 kg in size S, without pedals.
12 kg in size M, without pedals.
12.1 kg in size L, without pedals.
12.2 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.
Total weight (bike + equipped rider) should not exceed 120 kg.


Your ROCKRIDER XC 100 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 can hold two bottle cages (except size S).

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Composition / advice

Frame (for bike)
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.

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XC 100 Mountain Bike, NX Eagle - 27.5
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Maintenance and repair
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