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ROCKRIDER XC 100S Full Suspension Mountain Bike - 29"

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until £1,099.99 -%


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

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£1,099.99 -%
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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The perfect bike for getting started with cross-country mountain biking, the Rockrider XC100S full-suspension mountain bike will help you to surpass your limits. Its key features include an aluminium frame with XC geometry, SRAM Eagle 1x12, SunRingle Duroc 30 wheels and a ‘Switch and Ride’ compatibility with three wheel sizes.
  • 29-inch wheels provide speed and inertia
  • Suitable for both men and women
  • Lifetime warranty on frame, stem and handlebars
Not Available Now

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 Go faster: XC geometry, SRAM NX Eagle 1x12, and SunRingle Duroc 30 wheels.
Lightweight Go fast with the full-suspension aluminium frame (2.580kg in size S).
Shock absorption Read the terrain: 120mm shock & fork and new kinematics.
Braking power Powerful brakes with double piston calipers and 180mm/160mm discs.
Lifetime warranty ROCKRIDER offers a lifetime warranty on the frame, handlebars and stem.

Technical Information

The story of the 100 S Cross-Country mountain bike...

Entirely designed and developed in France at the B'Twin Village (Lille), this mountain bike is the fruit of the work of an expert team of passionate cross-country mountain bikers. The Rockrider team designed and tested the Rockrider 100 S mountain bike with their mountain bike testers.
For your satisfaction, the Rockrider XC 100 S is assembled in our own factory in Lille, France, just a stone's throw away from our design team.
For more information:


The SWITCH & RIDE system is easy: a mountain bike frame compatible with 3 wheel sizes.
1/ You choose your Switch and Ride compatible mountain bike in 27.5", 27.5" Plus, or 29".
2/ You add a 2nd or 3rd pair of wheels.
3/ Enjoy all terrains!


Men's or women's mountain bike? The Rockrider XC 100 S 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.


Several sizes available:
S: between 1.50m and 1.64m
M: between 1.65m and 1.74m
L: between 1.75m and 1.84m
XL: between 1.85 m and 1.95 m
If you are on the edge between 2 sizes, we recommend following the exact size listed.


The Rockrider Cross Country frame offers 120mm of travel on the rear wheel. Its geometry has been optimised for performance: 69.5° steering angle.
Made of 6061 and 6013 aluminium.
Switch And Ride frame with lifetime warranty: compatible with 27.5" and 27.5" PLUS wheels
148 mm x 12 mm BOOST rear axle.
"Press fit 92" bottom bracket.
31.6 mm diameter saddle tube with an opening ready for a telescoping seat post.
Compatible with a bottle cage.
Weight in size S: 2.58 kg.


Overcome all obstacles.
Manitou Markhor front suspension with 120mm of travel, with an exclusive adjustment for the XC 100 S.
Hydraulic suspension is both sensitive to small impacts (absorbs the slightest bump at low speed) and takes shocks well (absorbs large obstacles at high speed).
Direct locking front suspension (in intermediate position or locked) on the handlebar using the Combo Lock handle.
Compatible with 27.5" and 27.5" Plus wheels.

Rear Suspension

Correct your path and keep going faster, especially on technical sections.
Manitou Radium Expert 120 mm rear suspension, specifically designed for the Rockrider XC 100 S mountain bike.
Direct locking rear suspension (in intermediate position or locked) on the handlebar using the Combo Lock handle, that locks the front and rear suspensions simultaneously.

Drive train

Stay focused on your effort with this single chainwheel.
New SRAM NX Eagle drive train, 1x12 single chainwheel, for lighter weight, more precision, faster gear changing, and greater durability.
34-tooth chainwheel can be easily replaced between 28 and 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.
Full single chainwheel system


Keep stable and find your attack position.
Rockrider Comp Flat handlebar is 720 mm wide for more stability.
The B'TWIN COMP stem is adapted to the size (70mm in size S, 80mm in size M, 90mm in size L, and 100mm 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. Now reinforcements and Ergofit system for greater comfort. The 31.6 x 400 seat post is compatible with the telescoping post.


The choice of brakes is both powerful and progressive.
Exclusive Rockrider by Tektro brakes with double pistons.
180mm front discs, 160mm rear discs.


29" SWITCH & RIDE wheels: choose speed and inertia!
Sun Ringle Duroc 30 SRC Tubeless Ready wheels, with Boost axles, in 15mm at the front and 12mm at the back.
Inner rim width: 30mm.Sealed bearings.
Equipped with a watertight rim strip, 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.
29 x 2.10 Hutchinson Toro 2 tyres
Versatile tyres designed for riding on any terrain: smooth, rocky, dry or muddy...
Smaller lugs for better traction.
High side knobs for good grip in the turns.


The bike comes with B'Twin Flat Evo platform pedals. However, for better performance when pedalling, we recommend replacing them with clipless platform 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.


13.4kg in size S, without pedals. 13.5 kg in size M, without pedals.
13.6 kg in size L, without pedals.
13.7 kg in size XL, without pedals.
The weight can vary based on the tolerance of the components. The bike comes with B'Twin Flat Evo platform pedals.
The total weight (bike + rider) should not exceed 120kg.


Your Rockrider XC 100 S mountain bike is Switch & Ride. It is compatible with 3 different wheel sizes: 27.5", 29", and 27.5" Plus.
Multiply your experiences with the same frame and components. With the 3 "ready to ride" wheel kits available in Decathlon stores, you have 3 bikes and 3 different experiences!


During your first few rides, your bike's equipment will adjust (chain, derailleur, brakes, etc.)
We offer a free servicing within 6 months following purchase. Our technicians will provide a 13-point inspection of your bike.
Access all our advice on handling your bike:


S - 150-164cm: 13.4 kg
M - 165-174cm: 13.5 kg
XL - 185-195cm: 13.7 kg

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Composition / advice

Frame (for bike)
100.00% Aluminium
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, handlebars). Details on our website. Availability of spare parts: 2 years.

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100 S XC Mountain Bike 29
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