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Product description

Designed for your first MTB touring rides, in dry weather, up to 1 hour 30 minutes.

An efficient, easy-to-handle MTB! Riding the ST 120 MTB you will feel the precision and light weight provided by the single chainring (1x9 speeds) and mechanical disc brakes. Change speeds easily!

ROCKRIDER

Women's 27.5" mountain bike st 120 - navy

229.000 BD

Size Guide

Size Guide

Size Guide

MEN'S
Tops
Size Chest (in) Waist (in)
XS 33.1 – 34.3 27.6 – 28.7
S 34.6 – 35.8 29.1 – 30.3
M 36.2 – 37.4 30.7 – 31.9
L 37.8 – 40.6 32.3 – 35.0
XL 40.9 – 44.5 35.4 – 39.4
2XL 44.9 – 48.4 39.8 – 43.7
3XL 48.8 – 53.1 44.1 – 48.4
Bottoms
Size Low hip (in) Waist (in)
XS 31.5 – 33.5 26.0 – 28.0
S 33.9 – 35.8 28.3 – 30.3
M 36.2 – 38.2 30.7 – 32.7
L 38.6 – 40.9 33.1 – 35.0
XL 41.3 – 43.7 35.4 – 38.2
2XL 44.1 – 46.5 38.6 – 41.3
3XL 46.9 – 49.6 41.7 – 44.5
HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Chest: Wrap a tape measure around your back and measure the fullest part of your chest. Make sure it's straight and parallel to the floor. Look straight ahead, tighten the tape and breathe normally.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

WOMEN'S
Tops
Size Low hip (in) Waist (in)
2XS 31.5 – 32.7 22.8 – 24.4
XS 33.1 – 34.3 24.4 – 25.6
S 34.6 – 35.8 26.0 – 27.2
M 36.2 – 37.4 27.6 – 28.7
L 37.8 – 40.6 29.1 – 33.1
XL 40.9 – 44.5 33.5 – 37.8
2XL 44.9 – 48.4 38.2 – 42.5
Bottoms
Size Low hip (in) Waist (in)
2XS 31.1 – 33.5 23.6 – 24.8
XS 33.5 – 35.4 25.2 – 26.8
S 35.4 – 37.8 27.2 – 28.7
M 37.8 – 40.2 29.1 – 31.1
L 40.2 – 42.5 31.5 – 33.9
XL 42.5 – 44.9 34.3 – 36.6
2XL 44.9 – 47.2 37.0 – 39.4
Bra
Size Bust (in) Underbust (in)
2XS 30.7 – 31.5 24.8 – 26.4
XS 31.5 – 33.5 24.8 – 28.3
S 33.5 – 35.4 26.8 – 30.3
M 35.4 – 37.4 28.7 – 32.3
L 37.4 – 39.4 30.7 – 34.3
XL 39.4 – 41.3 32.7 – 36.2
2XL 41.3 – 43.3 34.6 – 38.2
HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Bust: Wrap a tape measure around your back and measure the fullest part of your bust. Make sure it's straight and parallel to the floor. Look straight ahead, tighten the tape and breathe normally.

Underbust: Directly below the bust, wrap a tape measure around the ribcage. Make sure it's straight and parallel to the floor. Raise your head, tighten the tape and breathe normally.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hips: Wrap a tape measure around the fullest part of your hips.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

KIDS'
Boys
Age Height (in) Chest (in) Waist (in) Low hip (in)
6 months 24.0 – 27.2 16.5 – 16.9 14.6 – 15.2 16.5 – 17.1
9 months 27.6 – 28.3 16.9 – 17.3 15.2 – 15.6 17.1 – 17.7
12 months 28.7 – 29.5 17.3 – 17.7 15.6 – 16.1 17.7 – 18.5
18 months 29.9 – 31.9 18.1 – 18.5 16.3 – 16.9 18.5 – 19.3
24 months 32.3 – 34.6 18.9 – 19.3 17.3 – 18.1 19.3 – 20.3
2 – 3 years 35.0 – 37.4 19.7 – 20.1 18.1 – 18.9 20.3 – 20.9
3 – 4 years 37.8 – 40.2 20.5 – 21.3 19.3 – 20.1 21.3 – 22.4
4 – 5 years 40.6 – 44.1 21.7 – 22.4 20.1 – 20.9 22.8 – 24.0
5 – 6 years 44.5 – 48.0 22.8 – 23.6 20.9 – 21.7 24.4 – 25.6
7 – 8 years 48.4 – 51.2 24.4 – 24.8 21.7 – 22.4 26.0 – 27.2
8 – 9 years 51.6 – 55.1 25.2 – 26.4 22.8 – 23.6 27.6 – 28.7
10 – 11 years 55.5 – 59.1 26.8 – 28.7 24.0 – 25.2 29.1 – 30.3
12 – 13 years 59.4 – 63.0 29.1 – 31.5 25.6 – 27.2 30.7 – 33.1
14 – 15 years 63.4 – 67.7 31.9 – 34.6 27.6 – 29.1 33.5 – 35.8
Girls
Age Height (in) Chest (in) Waist (in) Low hip (in)
6 months 24.0 – 27.2 15.4 – 16.9 13.4 – 15.2 15.4 – 17.1
9 months 27.6 – 28.3 16.9 – 17.3 15.2 – 15.6 17.1 – 17.7
12 months 28.7 – 29.5 17.3 – 17.7 15.6 – 16.1 17.7 – 18.5
18 months 29.9 – 31.9 18.1 – 18.5 16.3 – 16.9 18.5 – 19.3
24 months 32.3 – 34.6 18.9 – 19.3 17.3 – 18.1 19.3 – 20.3
2 – 3 years 35.0 – 37.4 19.7 – 20.1 18.1 – 18.9 20.3 – 20.9
3 – 4 years 37.8 – 40.2 20.5 – 21.3 19.3 – 20.1 21.3 – 22.4
4 – 5 years 40.6 – 44.1 21.7 – 22.4 20.1 – 20.9 22.8 – 24.0
5 – 6 years 44.5 – 48.0 22.8 – 23.6 20.9 – 21.7 24.4 – 25.6
7 – 8 years 48.4 – 51.2 24.4 – 24.8 21.7 – 22.4 26.0 – 27.2
8 – 9 years 51.6 – 55.1 25.2 – 26.4 22.8 – 23.6 27.6 – 28.7
10 – 11 years 55.5 – 58.3 26.8 – 28.0 24.0 – 24.8 29.1 – 31.9
12 – 13 years 58.7 – 62.6 28.3 – 31.9 25.2 – 26.4 32.3 – 35.0
14 – 15 years 63.0 – 65.4 32.3 – 33.9 26.8 – 28.0 35.4 – 36.6
HOW TO MEASURE:

Height: Stand against a wall, barefoot or in socks, heels pasted to the wall. Stand right, then hold a book or flat object on the top of your head. Block the book, mark the bottom edge of the book. Measure the distance from the floor to the mark.

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

FOOTWEAR
Men's Footwear
US Size Foot length (in) EU Size Foot length (cm)
6 9.6 38.5 24.5
6.5 9.6 39 24.5
7 9.8 39.5 25
7.5 10 40 25.5
7.5 10 40.5 25.5
8 10.2 41 26
8.5 10.4 41.5 26.5
9 10.4 42 26.5
9.5 10.6 42.5 27
9.5 10.8 43 27.5
10 11 43.5 27.5
10.5 11 44 28
11 11.2 44.5 28.5
11.5 11.2 45 28.5
11.5 11.4 45.5 29
12 11.6 46 29.5
12.5 11.6 46.5 29.5
Women's Footwear
US Size Foot length (in) EU Size Foot length (cm)
4 8.25 34 20.8
4.5 8.5 34.5 21.3
5 8.7 35 22
5.5 8.9 35.5 22.5
5.5 8.9 36 22.5
6 9.1 36.5 23
6.5 9.3 37 23.5
7 9.3 37 23.5
7.5 9.4 38 24
7.5 9.6 38.5 24.5
8 9.6 39 24.5
8.5 9.8 39.5 25
9 10 40 25.5
9 10 40.5 25.5
9.5 10.2 41 26
10 10.4 41.5 26.5
10.5 10.4 42 26.5
Unisex Footwear
Women's / Men's US Size Foot length (in) EU Size Foot length (cm)
W5 / M3.5 8.6 35 21.9
W5.5 / M4 8.9 36 22.5
W6 / M4.5 9.1 36.5 23
W6.5 / M5 9.3 37 23.5
W7 / M5.5 9.3 37.5 23.5
W7.5 / M6 9.4 38 24
W8 / M6.5 9.6 39 24.5
W8.5 / M7 9.8 39.5 25
W9 / M7.5 10 40 25.5
W9.5 / M8 10.2 41 26
W10 / M8.5 10.4 41.5 26.5
W10.5 / M9 10.4 42 26.5
W11 / M9.5 10.8 43 27.5
W11.5 / M10 11 43.5 27.5
W12 / M10.5 11 44 28
W12.5 / M11 11.2 44.5 28.5
W13 / M11.5 11.2 45 28.5
W14 / M12 11.6 46 29.5
W15 / M13 11.8 47 30
W16 / M13.5 12 48 30.5
HOW TO MEASURE:

Foot length: Stand against a wall, heels touching the wall. Put an object (e.g. book) against your longest toe. Measure the length between the wall and the object. Repeat this process for the other foot. If the lengths are different, choose the largest.

ACCESSORIES
Headwear (Caps, Beanies, Hats)
US Size Head (in)
2XS 18.5 – 19.7
XS 19.7 – 20.9
S 20.9 – 22.0
M 22.0 – 23.2
L 23.2 – 24.4
Helmets
US Size Head (in)
2XS 17.3 – 19.3
XS 18.5 – 20.5
S 20.5 – 21.7
M 21.7 – 23.2
L 23.2 – 24.4
Gloves
Size Palm perimeter (in) Hand length (in)
2XS 7.0 – 7.3 6.3 – 6.6
XS 7.3 – 7.6 6.7 – 6.9
S 7.6 – 7.9 7.0 – 7.2
M 8.0 – 8.2 7.2 – 7.4
L 8.3 – 8.5 7.4 – 7.7
XL 8.6 – 8.9 7.7 – 7.9
2XL 8.9 – 9.2 8.0 – 8.1
3XL 9.2 – 9.5 8.2 – 8.4
HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

BIKES
Kids' Bikes
Bike size Height (ft)
12" 2'5" – 3'0"
14" 3'0" – 3'5"
16" 3'5" – 3'11"
20" 3'11" – 4'5"
24" 4'5" – 5'1"
Road & Gravel Bikes
Bike size Height (ft)
XS 5'1" – 5'5"
S 5'5" – 5'8"
M 5'8" – 5'11"
L 5'11" – 6'2"
XL 6'2" – 6'7"
Mountain Bikes
Bike size Height (ft)
S 4'11" – 5'5"
M 5'5" – 5'9"
L 5'9" – 6'0"
XL 6'0" – 6'7"
Ref: 8530223
Size: S - 155-164CM
Color : navy blue
In stock
Available in store

Women's 27.5" mountain bike st 120 - navy

8530223 / S - 155-164CM / navy blue

Decathlon Bahrain City Centre

In stock
Bahrain City Centre
+973 17507979
Opening hours

Mon–Wed & Sun: 10:00–23:00 | Thu–Sat: 10:00–00:00

Our Stores

Decathlon Marassi Galleria Mall

Low stock (3 left)
Marassi Galleria Mall
+973 17507979
Opening hours

Mon–Wed & Sat–Sun: 10:00–22:00 | Thu–Fri: 10:00–00:00

Our Stores
Home Delivery 4 - 6 Days
Up to 2-year warranty
Secure Payments

Product description

Designed for your first MTB touring rides, in dry weather, up to 1 hour 30 minutes.

An efficient, easy-to-handle MTB! Riding the ST 120 MTB you will feel the precision and light weight provided by the single chainring (1x9 speeds) and mechanical disc brakes. Change speeds easily!
Description

Designed for your first MTB touring rides, in dry weather, up to 1 hour 30 minutes.

Weight

XS:15.0 kg S: 15.1 kg M: 15.2 kg L: 15,3 kg

UNISEX FRAME

A top tube with a relatively pronounced slope, over a wide range of sizes (S: 1.50m to XL: 2.00m), The ST 120 mountain bike has a UNISEX frame. As a woman, if you choose the men's model, we recommend at least purchasing the Women's Sport 500 saddle which is fitted to the female form.

A LIGHTWEIGHT, COMFORTABLE, FUN FRAME

Our designers created a frame that's easy to get onto. The 100% aluminium CGF frame (Comfort Geometry Frame) is both comfortable and easy to handle. The slope angle has been designed to keep your back straight, while the rear bases were shortened to make the bike very agile in turns.

DERAILLEUR & DRIVE TRAIN: A SINGLE CHAINRING LIKE THE PROS!

The single chainring is easy and efficient to use: 1 chainring and 9 speeds. Accelerate on the flat and take on climbs with no compromise. With a single lever on the handlebar, there's no need to even think! -ROCKRIDER FC ATB 100 - 32-tooth single chainring equipped with 2 chain guides (anti-derailment) -MICROSHIFT RD-M46-L rear derailleur -MICROSHIFT SL-759 right shifter -MICROSHIFT H092 9-cog cassette (11-36 teeth) -Wide, sturdy KMC Z9 chain

Front suspension

The 80 mm front suspension helps you overcome your first obstacles on slightly uneven trails with no worries. Easily adjust the hardness using U-Fit technology (weight adjuster). Simply set the number to your weight (55 kg to 105 kg) using the dial on the fork.

MECHANICAL DISC BRAKES

The Tektro TKD 68 160 mm double disc brakes provide powerful, progressive braking at the front and rear. The aluminium Tektro brake levers are precise, and easy to hold. Just two fingers are all you need to brake. 3 or 4 sets of 10 dry, intermittent stops are enough to break in your pads. Try to get your brakes adjusted at least once a year.

27.5" WHEELS & TYRES FOR DRY TERRAIN

The 27.5" wheels of the ST 120 are tolerant and sturdy, with 19 mm double-walled rims with 28 spokes. Slow down without worrying about obstacles: small rocks, cracks, holes and bumps! Because your first tours will be on dry ground, the Dry 27.5 x 2.0 tyres are most suitable. Their performance is optimised thanks to the rounded central section, whilst the side lugs provide good grip on turns.

HANDLEBARS, STEM, GRIPS

With a stem that tilts 10° upwards, the riding position of the ST 120 is raised, accessible, and comfortable. In detail: 90mm aluminium stem with an angle of 10° for maximum comfort - 640mm-wide steel handlebar, for stability and control -"Soft touch" lamellar grips for a firm yet soft and pleasant grasp.

Saddle

The saddle of the ST 120 is welded to prevent any movement of the saddle. And because your comfort is our priority after your safety, we've added an exclusive wider Ergofit saddle with a hammock shape. Easily adjust the height of your saddle with the Flex steel seat post, either 350mm or 400mm long (according to the bike size). Its reduced diameter of 27.2mm provides your seat with natural flexibility, 30% more than a standard solution.

Platform pedals

The Rockrider ST 120 mountain bike comes with resin mountain bike platform pedals for lower weight and increased safety. If your foot slides on the pedal, there's less risk of injury.

TRANSPORT & STORAGE

We added a quick release system for easily attaching/removing the front wheel. Our advice: a bike rack is an easy way to transport your mountain bike without dirtying your car.

Accessories

Your ST 120 mountain bike is supplied with a bell, lights, wheel reflectors and pedals. The frame is compatible with: -300 central stand (ref. 8172767) and 500 central stand (ref. 8172769) -100 bottle cage (ref. 8049106) and 500 bottle cage (ref. 8358133) -Mountain bike mudguard set (ref. 8385291) -100 saddle bag (ref. 8347394) and 500 saddle bag (ref. 8354448) -500 pannier rack (ref. 8364376) -100 frame child seat (ref. 8486913 and 8487125), from size M

WHAT SIZE MOUNTAIN BIKE TO CHOOSE?

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 1.85m and 2.00m To adapt the 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 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 larger size.

Accessories

The ST 120 mountain bike comes with a bell, lights, wheel reflectors, and pedals. The frame is compatible with: -300 central stand (ref. 8172767) and 500 central stand (ref. 8172769) -100 bottle cage (ref. 8049106) and 500 bottle cage (ref. 8358133) -Mountain bike mudguard set (ref. 8385291) -100 saddle bag (ref. 8347394) and 500 saddle bag (ref. 8354448) -500 pannier rack (ref. 8364376) -100 frame child seat (ref. 8486913 and 8487125), from size M

An efficient, easy-to-handle MTB! Riding the ST 120 MTB you will feel the precision and light weight provided by the single chainring (1x9 speeds) and mechanical disc brakes. Change speeds easily!

Cycling comfort

Enjoy touring: raised position, 80 mm suspension, hammock saddle, FLEX seat post

Directional control

Control your trajectory: cable disc brakes, tyres with side knobs

Efficiency

Pedal efficiently: light aluminium frame, 9 speeds and fast tyres.

Ease of use

Adjust your speed without thinking: 9-speed single-chainring drivetrain.

Robustness

An ultra-strong MTB: welded saddle, double-wall rims.

Lifetime warranty

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

Designed for your first MTB touring rides, in dry weather, up to 1 hour 30 minutes.

Designed for your first MTB touring rides, in dry weather, up to 1 hour 30 minutes.

Weight

XS:15.0 kg S: 15.1 kg M: 15.2 kg L: 15,3 kg

UNISEX FRAME

A top tube with a relatively pronounced slope, over a wide range of sizes (S: 1.50m to XL: 2.00m), The ST 120 mountain bike has a UNISEX frame. As a woman, if you choose the men's model, we recommend at least purchasing the Women's Sport 500 saddle which is fitted to the female form.

A LIGHTWEIGHT, COMFORTABLE, FUN FRAME

Our designers created a frame that's easy to get onto. The 100% aluminium CGF frame (Comfort Geometry Frame) is both comfortable and easy to handle. The slope angle has been designed to keep your back straight, while the rear bases were shortened to make the bike very agile in turns.

DERAILLEUR & DRIVE TRAIN: A SINGLE CHAINRING LIKE THE PROS!

The single chainring is easy and efficient to use: 1 chainring and 9 speeds. Accelerate on the flat and take on climbs with no compromise. With a single lever on the handlebar, there's no need to even think! -ROCKRIDER FC ATB 100 - 32-tooth single chainring equipped with 2 chain guides (anti-derailment) -MICROSHIFT RD-M46-L rear derailleur -MICROSHIFT SL-759 right shifter -MICROSHIFT H092 9-cog cassette (11-36 teeth) -Wide, sturdy KMC Z9 chain

Front suspension

The 80 mm front suspension helps you overcome your first obstacles on slightly uneven trails with no worries. Easily adjust the hardness using U-Fit technology (weight adjuster). Simply set the number to your weight (55 kg to 105 kg) using the dial on the fork.

MECHANICAL DISC BRAKES

The Tektro TKD 68 160 mm double disc brakes provide powerful, progressive braking at the front and rear. The aluminium Tektro brake levers are precise, and easy to hold. Just two fingers are all you need to brake. 3 or 4 sets of 10 dry, intermittent stops are enough to break in your pads. Try to get your brakes adjusted at least once a year.

27.5" WHEELS & TYRES FOR DRY TERRAIN

The 27.5" wheels of the ST 120 are tolerant and sturdy, with 19 mm double-walled rims with 28 spokes. Slow down without worrying about obstacles: small rocks, cracks, holes and bumps! Because your first tours will be on dry ground, the Dry 27.5 x 2.0 tyres are most suitable. Their performance is optimised thanks to the rounded central section, whilst the side lugs provide good grip on turns.

HANDLEBARS, STEM, GRIPS

With a stem that tilts 10° upwards, the riding position of the ST 120 is raised, accessible, and comfortable. In detail: 90mm aluminium stem with an angle of 10° for maximum comfort - 640mm-wide steel handlebar, for stability and control -"Soft touch" lamellar grips for a firm yet soft and pleasant grasp.

Saddle

The saddle of the ST 120 is welded to prevent any movement of the saddle. And because your comfort is our priority after your safety, we've added an exclusive wider Ergofit saddle with a hammock shape. Easily adjust the height of your saddle with the Flex steel seat post, either 350mm or 400mm long (according to the bike size). Its reduced diameter of 27.2mm provides your seat with natural flexibility, 30% more than a standard solution.

Platform pedals

The Rockrider ST 120 mountain bike comes with resin mountain bike platform pedals for lower weight and increased safety. If your foot slides on the pedal, there's less risk of injury.

TRANSPORT & STORAGE

We added a quick release system for easily attaching/removing the front wheel. Our advice: a bike rack is an easy way to transport your mountain bike without dirtying your car.

Accessories

Your ST 120 mountain bike is supplied with a bell, lights, wheel reflectors and pedals. The frame is compatible with: -300 central stand (ref. 8172767) and 500 central stand (ref. 8172769) -100 bottle cage (ref. 8049106) and 500 bottle cage (ref. 8358133) -Mountain bike mudguard set (ref. 8385291) -100 saddle bag (ref. 8347394) and 500 saddle bag (ref. 8354448) -500 pannier rack (ref. 8364376) -100 frame child seat (ref. 8486913 and 8487125), from size M

WHAT SIZE MOUNTAIN BIKE TO CHOOSE?

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 1.85m and 2.00m To adapt the 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 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 larger size.

Accessories

The ST 120 mountain bike comes with a bell, lights, wheel reflectors, and pedals. The frame is compatible with: -300 central stand (ref. 8172767) and 500 central stand (ref. 8172769) -100 bottle cage (ref. 8049106) and 500 bottle cage (ref. 8358133) -Mountain bike mudguard set (ref. 8385291) -100 saddle bag (ref. 8347394) and 500 saddle bag (ref. 8354448) -500 pannier rack (ref. 8364376) -100 frame child seat (ref. 8486913 and 8487125), from size M

An efficient, easy-to-handle MTB! Riding the ST 120 MTB you will feel the precision and light weight provided by the single chainring (1x9 speeds) and mechanical disc brakes. Change speeds easily!

Cycling comfort

Enjoy touring: raised position, 80 mm suspension, hammock saddle, FLEX seat post

Directional control

Control your trajectory: cable disc brakes, tyres with side knobs

Efficiency

Pedal efficiently: light aluminium frame, 9 speeds and fast tyres.

Ease of use

Adjust your speed without thinking: 9-speed single-chainring drivetrain.

Robustness

An ultra-strong MTB: welded saddle, double-wall rims.

Lifetime warranty

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

Designed for your first MTB touring rides, in dry weather, up to 1 hour 30 minutes.