Hide Filters
Filters 0
Sort by :
Filters 0
ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
ST 100 27.5" Mountain Bike - Women

ROCKRIDER

8405317

ST 100 27.5" Mountain Bike - Women

$300.00
7 reviews
7 of 7 people recommends this product
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
  • ST 100 27.5" Mountain Bike - Women
ST 100 27.5" Mountain Bike - Women
Size :

Store Availability

This 27.5" mountain bike is designed for women MTB touring beginners, for rides of up to 1½ hours in dry weather.

BENEFITS

Anatomic design

Comfort for women: saddle, adjustable fork, raised position, and closer brakes

Durability

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

Efficiency

Fly on a light frame, 21 speeds, 27.5" (XS 26") wheels, and fast rolling tires.

Easy to use

Change speeds quickly: grip shifters and closely spaced brakes.

Lifetime warranty

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

TECHNICAL INFORMATIONS

What size mountain bike should I choose?

Here’s our guide for MTB sizes.

XS: between 1.45 m and 1.54 m
S: between 1.55 m and 1.64 m
M: between 1.65 m and 1.74 m
L: between 1.75 m and 1.84 m
To adapt your MTB 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.

The Women’s Rockrider MTB Project

Designed and developed in France at the B'Twin Village (Lille).
The team studied the features of women’s bodies when designing and testing 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 conducted surveys to create a mountain bike specially designed for women. These included studies in the Decathlon Sports Lab and real-world tests with mountain bikers. Six 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 mount.
The CGF frame (Comfort Geometry Frame) is 100% aluminum for optimum comfort and excellent manoeuvrability. The top tube angle keeps your back straight while the lower rear tube ensures the bike is very agile during turns.

Front suspension for cushioning bumps and jolts

Adjust the suspension stiffness based on your weight, from 45 kg to 80 kg, to get over roots and stones more easily. All thanks to the UFIT concept (exclusive to Decathlon).
It’s easy: simply turn the adjustment dial!

The 80 mm front suspension is designed for slightly uneven terrain and helps you overcome obstacles with peace of mind.
Its mechanical spring design is reliable and easy to maintain.

Derailleur and drivetrain: How to shift gears

3 x 7-speed chainrings for 21 speeds!
Two easy-to-use grip shifters on the handlebars.
Left (chainrings): control ascents/descents.
Right (speeds): more precise control of your pedalling.

In detail:
-Triple-chainring 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

Handlebar, stem, and grips: for comfort

Specially designed for women’s bodies, the 60 mm aluminum stem with a 10° angle gives you maximum comfort. The 640 mm steel handlebar provides good control and stability. And the soft-touch handles are comfortable and provide good grip.
To adjust the bike to your build, move the spacer (the coloured ring) to adjust the stem height, or turn it over to mark the position.

An ergonomic saddle you can adjust in one step.

An exclusive “comfort" saddle specially designed for the female pelvis provides superior comfort.
Looking for an even comfier 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 the quick-adjust lever.

V-brakes: Control your braking

We reduced the distance between the handlebar and the brake by 1 cm to suit women’s smaller hands. With this improved, more responsive position, you will gain confidence as you ride. The two V-brakes are made of two callipers that exert pressure on the rim to slow down or stop the rotation of the wheels. You can brake using only two fingers. Check the wear on your brake pads once a year. If the grooves are disappearing, take your bike to your local store's workshop.

27.5" wheels and tires 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 rims are lined for added durability and shock absorption. The Dry 27.5 x 2.0 tires offer optimal performance with a rolling central section and knobs on the sides to grip the ground on corners.

Platform pedals:

The ST 100 Rockrider mountain bike comes with resin platform mountain bike pedals for added lightness 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’s 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 rack will make your life easier if you want to avoid getting your car dirty.

Accessories:

Your ST 100 mountain bike comes with a derailleur guard, a chainring guard (to keep your clothes from getting dirty), a 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 mount)
-Basket -Gel seat cover -and much more
You can find all their item codes on our customer support website.

Comfort and safety

We recommend that beginners wear cropped bottoms or cycling shorts with a pad (foam in the shape of a saddle) or a gel seat 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 on your mountain bike? Don't worry, they aren’t just to add a touch of pink.
Resistant to wear, they provide hints on how to adjust your bike: adjusting the fork, tire 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 :)

Reviews

4.6/5 7 reviews
7 of 7 people recommends this product
Great bike
-Anusha (Canada)
The bike is great. Missing parts from decathlon. I had to purchase the quick release skewer to attach the front wheel as it was missing, also the band is missing to attach the rear tail light.
Except the missing parts. The bike is great. You might also consider a saddle cushion to avoid the soreness.
5 starts for the bike , 3 stars for decathlon for missing the assembly items.
Wifes 1st bike
ian (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.
She loves it....well made,just 100% exactly what she wanted. Great price
Rock rider
Andrew (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.
Nice looking bike and great value for money
Great VFM, let down by lack of saddle adjustment
Simon (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.
Mechanically this is a great bike. Perfect for leisure riding, and quite well assembled in the box it comes in. However, the contact points are the most important part of a bike. That's the pedals, seat and bars. On the ST100 the saddle has no, or little adjustment for tilt. I ended up buying a new seatpost for my daughter as she was incredibly uncomfortable after only a short ride. As a bike builder and avid cycling enthusiast I was able to figure out why, the saddle was nose up! Generally a level, or slightly nose down seat is more comfortable. I'd still recommend this bike, I bought it because it fitted the purpose better than any other option, just budget for an adjustable seatpost, its a fairly standard size so easy enough to get hold of.
For my daughter
Adam (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.
A superb bike and a fantastic price!
St 100
Michelle (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.
Good bike apart from the tyres. I have only been on two bike rides so far and both times I have had a puncher
st 100 women's 27.5" mountain bike
robert (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.
great size bike for my daughter, the assistant advised us to get this size as it has bigger wheels and would last he a lot longer, great bike for the money, also came with lights and bell, we bought a water bottle and carrier that the assistant fitted when he was doing his pre deliver check.very helpful staff the bike also comes with a free service.
  • 1