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W MTB BIKE

ROCKRIDER ST 100 Women's Mountain Bike, White - 27.5"

ROCKRIDER
4.6/5
User rating
Decathlon
until £179.99 -%

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Check availability in store
Have fun as you tackle small obstacles in the great outdoors, whether it's your first mountain bike adventure or you're still getting a handle of the off-road experience with the Rockrider ST 100. Comfort is the priority - check out the CGF frame with raised position, 80mm suspension, women's hammock saddle with Flex seat post and 27.5" wheels (26" in XS) - but speed isn't far behind (there are 21 and the grip shifters make them quick to switch between).
  • Light frame with raised position for comfort and control
  • Precise breaks and lugged tyres
  • 80mm suspension
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 and you might not be able to process your order at checkout. The count resets at 11pm every day so that would be the best time to try, although we do have a peak of attempts at this time so we can't guarantee a slot for everyone.

 

Technical Information

WHAT SIZE MOUNTAIN BIKE TO CHOOSE?

Here is our guide for MTB sizes.
XS: between 1.45m and 1.54m
S: between 1.55m and 1.64m
M: between 1.65m and 1.74m
L: between 1.75m and 1.84m
To fit your MTB to your height and size, try these tips:
1/ Sitting on the saddle, you should be able to touch the ground with the tips of your toes.
2/ To adjust the seat height, your knee should be slightly flexed with your foot on the pedal in the lowest position.
3/ If you're between two sizes, choose the larger size.

THE WOMEN'S ROCKRIDER MTB PROJECT

Designed and developed entirely in France at the B'Twin Village (Lille).
The team studied the features of the female form and used this to design and test the ST 100 MTB, involving mountain bikers at every stage of the process.
Our goal is to make you want to ride and enjoy every single outing on a comfortable and easy-to-ride mountain bike.

A MOUNTAIN BIKE FOR GIRLS AND WOMEN

We carried out surveys to create a mountain bike specially designed for women. These included studies with the Decathlon Sports Lab, and real-world tests with mountain bikers. 6 months later, here's the result: a mountain bike with positioning elements adapted for women!
These include: - An ergonomic saddle designed for the female pelvis.
- A fork that adjusts to your weight
- A shorter, adjustable stem
- Less space between the handles and brake levers
- An XS frame

A COMFORTABLE, PLAYFUL FRAME

Because we've noticed that it's not always easy to get the right position on a mountain bike, our designers have created an entirely new frame that's easy to get onto.
The CGF frame (Comfort Geometry Frame) is 100% aluminium for optimal comfort and excellent manoeuvrability. The slope angle has been designed to keep your back straight, while the low rear ensures the bike is very agile in turns.

FRONT SUSPENSION FOR CUSHIONING LUMPS AND BUMPS

Adjust the suspension hardness based on your weight, from 45 to 80 kg, to get over roots and stones more easily. All thanks to the UFIT concept (exclusive to Decathlon).
Easy: simply turn the adjustment wheel!
The 80 mm front suspension is designed for slightly uneven trails and helps you overcome obstacles with peace of mind.
Its design, based on a mechanical spring, is reliable and easy to maintain.

DERAILLEUR & DRIVETRAIN: HOW TO CHANGE SPEEDS

3 x 7 speed chainwheels, 21 speeds total!
2 easy-to-use grip shifters on the handlebars.
Left (chainwheels): control ascents/descents.
Right (speeds): more precise control over your pedalling.
In detail:
-Triple-chainwheel chainset (22/32/42 teeth)+ anti-grease protection.
-Microshift FD-M20 front derailleur
-Microshift RD-M25 rear derailleur
-Microshift MS25 grip shifters with speed indicators
-Shimano TZ500 7 cog cassette, 14 to 28 teeth
-Large, solid KMC Z51 chain

STEM, HANDLEBAR, GRIPS: for comfort

The 60mm long aluminium stem, which is specially designed for the female form with a 10° angle, gives you maximum comfort. The 640 mm wide steel handlebar provides good control and stability. And the soft touch handles are comfortable to hold and provide good grip.
To adjust the bike to your build, move the spacer (the coloured ring) to adjust the stem's height, or turn it over to mark the position.

An ERGONOMIC saddle that adjusts in one step.

An exclusive "COMFORT" saddle designed especially for the female pelvis, which provides superior comfort.
Looking for an even more comfortable saddle for more fun as you ride? When just getting started, you might want to add a gel seat cover and/or MTB cycling shorts with a pad designed for women. Adjust your saddle height quickly and without tools using to the quick-adjust lever.

V-BRAKES: CONTROL YOUR BRAKING

To adapt to girls' smaller hands, we reduced the distance between the handlebar and the brake by 1 cm. With this better, more responsive position, you will gain confidence as you ride. The 2 V-brakes are made of 2 callipers that exert pressure on the rim to slow or stop the rotation of the wheels. The brakes can be applied using only two fingers.One a year, check how the pads are wearing. If the grooves are disappearing, take your bike to your local store's workshop.

27.5" wheels & tyres for dry terrain: READY TO RIDE?

Take on your first obstacles! The wheels are effective and sturdy: 27.5", double-walled rims, 28 spokes (26", single-walled and 32 spokes in XS). The rim is lined for added durability and shock absorption. The DRY 27.5 x 2.0 tyres offer optimal performance with a rolling central part and knobs on the side to grip the ground on corners.

PLATFORM PEDALS

The Rockrider ST100 mountain bike comes with resin platform mountain bike pedals for added light weight and safety. If your foot slips off the pedal, there's less risk of bruising your shin.

EASILY TRANSPORT AND STORE YOUR MOUNTAIN BIKE

Not all rides start on your doorstep. Need to remove the front wheel?
It's easy thanks to the integrated clamping lever. And the rear wheel? There is a nut at the back to secure the bike and limit the risk of theft.
A flat spanner is needed to remove the rear wheel.
A bike carrier will make your life easier if you want to avoid dirtying your car.

ACCESSORIES

Your ST 100 mountain bike comes with a derailleur guard, chainwheel guard (to keep your clothes from getting dirty), bell, lights, wheel reflectors and pedals.
Other available accessories:
-Front and rear mudguards (Flash MTB or 700 MTB)
-Stand (500 Adult Base)
-Bottle cage
-Saddle bag
-Rear pannier rack
-Child seat (Polisport Groovy, frame mounted)
- Basket - Gel seat cover ...
You can find all of the item codes for these on our customer support website.

COMFORT & SAFETY

We recommend that beginners wear cropped bottoms or cycling shorts with a pad (foam in the shape of a saddle) or a gel saddle cover to reduce soreness. For long rides, it's always a good idea to take a drink with you (e.g. hydration pack or water bottle).
And our last bit of advice is a style tip: in all circumstances, even for a short ride, wearing a helmet and gloves is essential in case you take a tumble!

An easy-to-understand MTB with stickers

Did you notice the coloured stickers over your mountain bike? Don't worry, it's not to add a touch of pink.
Resistant to wear, they provide hints on how to adjust your bike: adjusting the fork, tyre pressure, rim diameter, saddle height... When you head off on a ride, it's always useful to have the instructions directly on your bike!
For other information (washing, chain maintenance, etc.), read our support file :)

Weight

XS - 140-154cm: 15.3 kg
S - 155-164cm: 15.4 kg
M - 165-174cm: 15.5 kg
L - 175-184cm: 15.6 kg
XL - 185-200cm: 15.8 kg
Weight without pedals.

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How has this product been built

Composition / advice

Composition
Frame (for bike)
100.00% Aluminium
Stock advice After washing, rub with a dry cloth to remove all traces of moisture. Store your mountain bike in a cool, dry place, away from corrosive products and salty air.
Restricted use : Not suitable for XC, All Mountain, Enduro and BMX.
instructions To get more information about this product, please read instructions
Legal notice Your bike's exact weight may vary due to the components' tolerances.
The total weight (bike + rider) should not exceed 120kg.

Our commitments

Test Product Our team did real-world tests in the field to test our bikes with women mountain bikers. These tests are in addition to our lab tests, and allow us to validate all our products before they are put on the market.
Guarantee : Lifetime (frame, stem, handlebars). Availability of spare parts: 2 years.
 

Product benefits

Anatomic design Comfort for women: saddle, adjustable fork, raised position, closer brakes
Durability An ultra-strong MTB: double-walled rims, welded saddle, derailleur guard.
Efficiency Fly with a light frame, 21 speeds, 27.5" (XS 26") wheels & fast rolling tyres.
Ease of use Change speeds quickly: grip shifters & closely-spaced brakes.
Lifetime warranty ROCKRIDER offers a lifetime warranty on the frame, handlebars and stem.

FAQ

Q : How to assemble your bike?
Everything you need to know about making sure your bike is comfortable, secure and ready to ride.
Q : How do you adjust your brakes?
Having properly functioning brakes is vital when out on the road. Check out how to get them working to your liking.
Q : How to replace a brake lever on a bike?
Having properly functioning brakes is vital when out on the road. Here’s a video to show you how to make sure your new brake level is working nicely.
Q : How to replace a disc brake?
Having issues with your disc brake? Then this video is for you.
Q : How to adjust your bike handlebar?
A suitable handlebar height is essential to your cycling safety and comfort. Find out how to adjust it to your liking with our video.
Q : Do you offer a Cycle To Work scheme?
Find out everything you need to know about way of getting to work that’s good you and the environment.Check Here

your reviews

Reviews by our Team Members

Our customers pictures

FAQ

Q : How to assemble your bike?
Everything you need to know about making sure your bike is comfortable, secure and ready to ride.
Q : How do you adjust your brakes?
Having properly functioning brakes is vital when out on the road. Check out how to get them working to your liking.
Q : How to replace a brake lever on a bike?
Having properly functioning brakes is vital when out on the road. Here’s a video to show you how to make sure your new brake level is working nicely.
Q : How to replace a disc brake?
Having issues with your disc brake? Then this video is for you.
Q : How to adjust your bike handlebar?
A suitable handlebar height is essential to your cycling safety and comfort. Find out how to adjust it to your liking with our video.
Q : Do you offer a Cycle To Work scheme?
Find out everything you need to know about way of getting to work that’s good you and the environment.Check Here

Our services

ST 100 Women's Mountain Bike, White - 27.5
Maintenance and repair
Maintenance and repair
Spare parts