B'Twin Rockrider Ladies ST 100 Mountain Bike

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B'Twin Rockrider Ladies ST 100 27.5" Hardtail Mountain Bike XS,S,M,L, White, Alloy Frame, 27.5" Wheels, 15.3kg, 21 Speed, Caliper Brakes, Triple Chainring

Available in XS, S, M & L in White.

just £230!

View the B’Twin Rockrider Ladies ST 100 27.5″ Hardtail Mountain Bike

The Ladies ST 100 is the female version of the popular male ST 100 entry level mountain bike from Rockrider, a Decathlon own brand. By selling their own bikes, the women's ST 100 offers a competitive specification for what is the minimum amount you need to outlay for a "fit-for-purpose" mountain bike. Unless you're buying second hand, then anything cheaper than this wouldn't really be useable off-road.

So what does it include? A similar specification to the men's version, including an alloy frame, 21 speed groupset from Microshift, adjustable suspension forks and a 27.5" wheelset. Geometry is slightly altered to suit the female form, and a ladies specific saddle replaces the men's seat. Sadly, disc brakes are not included and as you'd expect at this price, the weight is 15.3kg (or 33.7lbs).

Below you'll find full details on the female specific ST 100, so you can make your mind up and see if it's the right bike for you.

B'Twin Rockrider Women's ST 100 MTB

Ladies ST 100 photos
Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike Rockrider ST 100 Women's Mountain Bike
  • B'TWIN Ladies Alloy Hardtail MTB Frame with Front Suspension
  • Part of the range.
  • 27.5" Wheels (V Brakes)
  • 21 Speed (3 x 7)
  • Available in XS, S, M & L in White.
  • Weighs 15.3kg

MTB Specification
Frame & Fork
FrameLightweight female specific aluminium CGF frame
Forks80mm suspension fork with mechanical spring and adjustable using a dial
Frame MaterialAlloy
Frame TypeHardtail
Fork TypeSuspension Fork
Wheels27.5" double-walled 28-spoke rims
TyresDry 27.5 x 2.0 tyres
Wheel Diameter27.5"
Handlebars620mm wide steel handlebar
StemAlloy stem with 10 degrees rise, 90mm length for XS/S and 110mm for M,L & XL
HeadsetOwn brand headset
GripsSoft touch grips
Finishing Kit
Seatpost27.2mm Flex seat post (350mm or 400mm long)
SaddleWomen's hammock Ergofit saddle
PedalsHard resin platform MTB pedals
BrakesTwo V-Brakes front and rear, 2 finger aluminium brake levers
Brakes TypeCaliper Brakes
ChainsetTriple chainset for 7 speed system
Front DerailleurMicroshift FD-M20 front derailleur
Rear DerailleurMicroshift RD-M25 rear derailleur
ShiftersMicroshift MS25 grip shifters with speed indicators
ChainKMC Z51 chain
CassetteShimano TZ500 7 cog cassette, 14 to 28 teeth
Number of Gears21 Speed
ChainringsTriple Chainring
Cassette7 Speed
General Details
Other InfoComes with a derailleur guard, chainring guard, bell, lights, wheel reflectors, and pedals
Bike TypeMountain Bikes
Designed forMTB
SizeXS, S, M & L
Lowest Price£229.99

B'Twin Rockrider Ladies ST 100 Mountain Bike

Our team designed this 27.5" mountain bike especially for women getting started with mountain biking, for rides of up to 90 minutes in dry weather.

Comfort first and foremost: this ST100 women's MTB has a raised position, comfortable saddle, 27.5'' wheels (26" / XS) to keep you comfy while mountain biking. Double-wall rims and light alu frame.

User comfort: Comfort for women: ergonomic saddle and fork adjustable starting at 45kg.

Robustness: 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.

Which is the right size?: Here is our guide for MTB sizes. XS:between 1.40m and 1.54m.

S: between 1.55m and 1.64m.

M: between 1.65m and 1.74m / 15.5 kg in sizem.

L: between 1.75m and 1.84m. To fit your MTB to your 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 saddle height, your knee should be slightly flexed with the foot on the pedal in the lowest position. 3/ If you're between two sizes, choose the smaller size.

THE WOMEN'S ROCKRIDER MTB PROJECT: Designed and developed entirely in France at the B'Twin Village (Lille). The team observed and studied women's needs and used this to design and test the ST 100 MTB, involving mountain bikers at every stage of the process. Our aim is to make you want to jump onto your comfortable, easy-to-use mountain bike so that you enjoy every one of your rides.

A MOUNTAIN BIKE FOR GIRLS AND WOMEN: We carried out studies:. These included studies with the Decathlon Sports Lab, and real-world tests with hard-core women mountain bikers.

The result: a bike with positioning elements designed for women! These include:.

A comfortable saddle with a hollow centre that is adapted to wider hips. An adjustable fork based on your weight starting at 45kg.

An XS frame starting at 1.40m 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 90 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 chainrings, 21 speeds total! 2 easy-to-use grip shifters on the handlebar.

Left (chainrings): control ascents/descents.

Right (speeds): more precise control over 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 STEM, HANDLEBAR, GRIPS: for comfort: The 90mm long aluminium stem, with a 10 degrees angle, provides maximum comfort! The 620mm-wide steel handlebar provides stability and control. The soft touch handles are comfortable to hold and provide good grip.

V-brakes: BRAKE EFFECTIVELY!: 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.

We offer a free inspection of your mountain bike within 6 months following the purchase of your bike.

27.5" WHEELS & TYRES FOR DRY GROUND: 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 clamping lever built into the wheel.

And the rear wheel?. There is a nut at the back wheel to secure the bike and reduce the risk of theft. Note that a flat spanner is needed to remove the rear wheel.

For safe rides, don't forget to bring anti-puncture spray. To keep your car clean, a bike rack can make your life easier.

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 optional 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.

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.
.. more details.

B'Twin Bikes

B'Twin Bikes

B'Twin are a popular choice of bike in the UK, partly due to their widespread distribution by Decathlon, and partly due to the value they offer. Their bikes are divided into several slightly overlapping ranges, with Triban best known for road and gravel bikes, and Rockrider gaining a reputation for high performing MTBs to suit every budget. Elops largely consist of a range of city bikes, whereas Riverside focus on hybrids. All in all, B'Twin bikes are well worth checking out given the size of their ranges; there's a model to suit most budgets.

Rockrider Mountain Bikes

Rockrider Mountain Bikes

Rockrider are Decathlon's off-road offerings, comprising of a series of kids bikes and adult hardtails, full suspension steeds and even a handful of high end E-MTBs.

This brand was launched in 2018, when Decathlon decided to split their B'Twin bikes into different genres. In terms of prices, there's something for everyone, with adult's MTBs starting at just over £200 and rising up to high end lightweight race bikes at nearly the £4000 mark.

If you want to ride off-road, and would prefer to buy from Decathlon, then the Rockrider mountain bike range is for you.

Rockrider Women's ST 100 MTB Mountain Bike Specification

Bike TypeMountain Bikes
Frame MaterialAlloy
Frame TypeHardtail
Fork TypeSuspension Fork
Brakes TypeCaliper Brakes
Number of Gears21 Speed
ChainringsTriple Chainring
Cassette7 Speed
Wheel Diameter27.5"
SizeXS, S, M & L
Designed forMTB
Lowest Price£229.99

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Welcome to Bike Bargains - I scour the internet trying to find the best deals specifically for UK based cyclists. Over the years I've saved hundreds of pounds on cycling gear, simply by shopping around and buying cycling consumables only when they're on sale. Whether you're a road cyclist or a DH mountain biker, I handpick the best money saving cycling related bargains I can find - and will hopefully save you money too! All details are believed to be correct, but please check with the retailer prior to buying - deals and specifications change, and your contract is solely with the retailer.

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