Free Delivery over £30* | Free Click & Collect at Decathlon Stores | 365 Days to Return

A mountain bike designed for womenHydraulic fork

  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
  • 15 - Cycling Cycling - ST 900 Women's Mountain Bike - 27.5
Reference : 8562824
Add to my wish list
Product already added
15 - Cycling

B'TWIN ST 900 Women's Mountain Bike - 27.5"

B'TWIN
User rating
Decathlon
until £549.99 -%

From

£549.99**
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
£549.99 %
Before£0.00NoW£549.99**
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
The women's ST 900 is a great hardtail mountain bike designed with the trail rider in mind. This machine focuses on comfort and control. At it's heart it an exclusive lifetime warranty double butted 6061 alloy frame weighing only 1.6kg. It features double walled 27.5" rims and smooth running sealed bearing hubs, lockable 120mm travel Rockshox 30 Silver Air front forks, modern 1x11 gearing and tektro designed hydraulic disc brakes. The wider bars, ladies hammock saddle and 2.2 wide tyres complete this fine package.

Also available in unisex versions.
Available in 3 sizes: S, M and L
 

PRODUCT BENEFITS

Anatomic design You'll love the raised position. 60 mm stem, 120 mm fork, ergonomic saddle.
Efficiency Smooth riding: lighter wheels, single chainring and fork lockout.
Directional control Manage your trajectory: hydraulic fork and brakes, tyres and wide handlebars.
Ease of use Change your speed or lock your fork in one motion on the handlebar.
Lifetime warranty Rockrider provides a lifetime guarantee for the frame, stem and handlebars.

TECHNICAL INFORMATION

WHAT OUR TEAM HAS TO SAY

We created this ST 900 mountain bike at our B'Twin Village (Lille, France) especially for mountain biking enthusiasts. A comfortable, efficient mountain bike: ROCKSHOX 120 mm fork to overcome obstacles easily and remote lockout, single chainring and 27.5" light double-walled wheels for greater efficiency.
Women riders have been involved in every stage of designing the ST 900 Mountain Bike.

A MOUNTAIN BIKE DESIGNED FOR WOMEN

The women on our mountain bike team helped design the ST 900 mountain bike to specifically take into account women's bodies:
The ergonomic saddle is hollowed out in the centre for improved comfort.
The fork is adjustable from 45 kg for more flexible suspension and greater enjoyment when riding.
The handlebar is narrower to better fit women's shoulders.
The brake levers are closer for an easier grip.
Shorter 60 mm stem for a better riding position

HOW TO CHOOSE THE SIZE OF YOUR ST 900 MOUNTAIN BIKE

This women's mountain bike is available in several sizes:
S: between 1.50m and 1.64m
M: between 1.65m and 1.74m
L: between 1.75m and 1.84m
If you are on the limit between 2 sizes:
Choose the smaller size for easier steering (easier to handle) and comfort (straighter back).
Choose the larger size for easier pedalling with a more stretched-out position (position more suited to performance).

A LIGHT, COMFORTABLE, PLAYFUL FRAME

For less weight and more efficient pedalling, the Rockrider ST 900 frame has been designed with 6061 aluminium (only 1.6 kg in size M). It is 300g lighter than the ST 540 frame thanks to its double butted front triangle.
Our designers have designed and developed it so it is comfortable and easy to manoeuvre. Its slope has been designed to keep your back straighter. The lower bottom bracket helps keep you more stable during turns.

ROCKSHOX FRONT SUSPENSION

The 120 mm Rockshox 30 Silver Air hydraulic fork is 400g lighter than that of the ST 540 bike. It is conical and offers even more stiffness and precision when steering.
Easily adjust the bounce and stiffness of the fork. Its quick COMBO LOCK lockout system, which you control from the handlebar, helps to prevent bobbing and loss of speed on smooth sections.

REAR SUSPENSION: NONE

This mountain bike has no rear suspension. This is a "semi-rigid" mountain bike.
Compared to a full suspension mountain bike (with rear suspension), the advantages are clear: lighter weight, you will spend less energy on flat ground. If however you're looking for comfort and manoeuvrability, the ST 900 is available in a full suspension version with suspension at the rear.

DERAILLEUR & DRIVETRAIN: A SINGLE CHAINRING LIKE THE PROS!

The single chainring is easy and efficient to use.
1 chainring and 11 speeds: accelerate on the flat and take on climbs with no compromise.
1 single shifter on the handlebar: adapt your speed instantly like the pros as the terrain changes!
In detail:
-SRAM X1 32-tooth single chainring
-MICROSHIFT M665 11-speed rear derailleur
-MICROSHIFT M8515 right shifter
-MICROSHIFT H113 11-cog 11 to 46 teeth cassette
-KMC X11 chain

HANDLEBARS, STEM, GRIPS

The adjustable stem brings the controls for the ST 900 easily under your hands. The all-aluminium ROCKRIDER stem is 60 mm (size S/M/L) and can be raised using 5 adjustment intervals.
Details:
- Oversize 680 mm-wide aluminium ROCKRIDER SPORT handlebars
- ERGONOMIC ROCKRIDER grips for a good grip and comfortable contact
- Brake leviers 1 cm closer as women's hands are generally smaller (better access)

COMFORTABLE, SPORT SEAT POST AND SADDLE

Our teams designed the Rockrider "Women's Comfort" ergonomic saddle especially for women.
It was specifically created for women's bodies, with a hammock shape and hollowed-out centre that is especially great for sport touring.
The Flex 27.2mm diameter aluminium seatpost also contributes to its increased level of comfort.
Quick and easy tool-free adjustment of your saddle height using the adjustment lever on the seat post clamp.

HYDRAULIC DISC BRAKES

No matter what conditions you ride in (dry/wet), the Rockrider by Tektro 180 mm (front) and 160 mm (back) double hydraulic disc brakes will come through for you, even in the mud.
Hydraulic braking adds more power and progressive braking and requires less powerful use of the brake levers.
The aluminium brake levers are easy to grip, lightweight, and precise.

WIDE, LIGHT 27.5" WHEELS

The 27.5" wheels are lightened with double walls. Their sleeved rims, combined with the lightened tyres, are 230g lighter than on the ST 540.
With their 28 spokes, they are lightweight, stiff, and durable.
The exclusive ROCKRIDER ALL CONDITIONS LIGHT 27.5"x2.2 tyres have side knobs for all terrains. A width of 2.2 means more grip on technical sections.
Tubeless Ready rims: you will need rim tape, specific valves and sealant.

EASILY TRANSPORT AND STORE YOUR MOUNTAIN BIKE

Not all rides start on your doorstep. This is why we've made it easy to remove and attach the front and rear wheels. They are equipped with a quick-release system.A bike carrier will make your life easier if you want to avoid dirtying your car.

COMFORT & SAFETY

On your first few rides, the equipment on your bike may shift a little (chain, derailleur, brakes, etc.). We offer a free inspection in the 6 months following purchase. Our technicians will carry out a 13-point check of your bike. Visit your nearest Decathlon workshop and our after-sales website:
https://support.decathlon.fr/

Weight

S - 150-164cm: 12.85 kg
M - 165-174cm: 12.95 kg
L - 175-184cm: 13 kg
Weight without pedals.

See more See less

COMPOSITION / ADVICE

Composition
Frame (for bike)
100.00% Aluminium 6061
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.
Legal notice Your bike's weight may vary due to tolerances in the components. To make your wheels last longer, we recommend not exceeding the maximum weight of 120kg (rider with mountain bike).

OUR COMMITMENTS

Test Product Our engineers always have real riders test all our products in real conditions. These tests round out our lab tests and let us validate all our products before they hit store shelves.
Guarantee : Lifetime (frame, stem, handlebars). Availability of spare parts: 2 years.
 

CUSTOMERS HAVE ALSO VIEWED

YOUR REVIEWS

REVIEWS BY OUR TEAM MEMBERS

OUR CUSTOMERS PICTURES

OUR SERVICES

ST 900 Women's Mountain Bike - 27.5
Maintenance and repair
Maintenance and repair
Spare parts