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Ease of use

Braking power

Cycling comfort

Directional control

Robustness

Lifetime warranty

S: 15.1 kg 
M: 15.2 kg 
L: 15.3 kg 
XL: 15.5 kg 

Net weight without pedals

Weight

Our designers created a frame that’s easy to get onto.
The 100% aluminum CGF frame (Comfort Geometry Frame) is both comfortable and easy to handle. The slope angle keeps your back straight while the lower rear bases ensure the bike is very agile during turns.

A lightweight, comfortable, fun frame

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 100 FC ATB 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

Derailleur & drive train: A single chainring like the pros!

The 80 mm (3") 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 [120 to 230 lbs]) using the dial on the fork.

Front suspension

The 27.5” wheels of the ST 120 are tolerant and sturdy, with 19 mm (3/4”) 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 tires are most suitable. Their performance is optimized with a rounded central section and side lugs that provide good grip on turns. 

27.5” wheels and tires for dry terrain

The Tektro TKD 68 160 mm (6") double disc brakes provide powerful, progressive braking at the front and rear. The aluminum Tektro brake levers are precise, and easy to hold. It takes only two fingers to brake.
Three or four series of 10 dry, intermittent stops are enough to break in your pads. Try to get your brakes adjusted at least once a year.

Mechanical disc brakes

With a stem that tilts 10° upwards, the riding position of the ST 120 is raised, accessible, and comfortable. In detail: 
90 mm (3 1/2”) aluminum stem with an angle of 10° for maximum comfort
- 640 mm (25") wide steel handlebar, for stability and control
-"Soft touch” lamellar grips for a firm yet soft and pleasant grasp.

Handlebars, stem, grips

The saddle of the ST 120 is welded to prevent movement.

And because your comfort is our priority (after 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 350 mm or 400 mm [14" or 16"] long (according to the bike size). Its reduced diameter of 27.2 mm (1") provides your seat with natural flexibility, 30% more than a standard solution.

Saddle:

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.

Platform pedals:

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 getting your car dirty.

Transport and storage

Several sizes available: 
S: between 1.50 m and 1.64 m (4’11" and 5’4")
M: between 1.65 m and 1.74 m (5’5" and 5’8")
L: between 1.75 m and 1.84 m (5’9" and 6’)
XL: between 1.85 m and 2.00 m (6’1" and 6’6")
To adapt the bike to your height, 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 sizes, choose the larger size.

What size mountain bike should I choose?

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 Holder (ref. 8358133)
- Mountain Bike Fender 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

Accessories

Purchased for family member &a...

Gears broke within 3 weeks wou...

Great value for the money 

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Bought this bike for my son to...

My Son love his bike. From the...

Just started using, so far so ...

Amazing!

Great value bike

Bought this bike took it out t...

The brake cables pass incorrec...

excellent bike for off roading

brilliant for off road , have ...

All good

Very good product, and perform...

It’s looks smart and smooth to...

Excellent bike ,smooth and eas...

Brilliant bike for the money

Alright bike

Great bike value for no money

Love this bike....used it to v...

Perfect for my needs

Great value

Bike review

great bike

very sturdy bike

Amazing

Very good

It’s okay

Good product

Great bike, very happy with my...

New Bike

Excellent  bike for reasonable...

Good start

Everything that makes it good ...

Touring mountain bike black/blue rockrider

Comfortable cycle

Good

Staff member was extremely hel...

Great service, helpful staff, ...

A great bike a good ride and e...

My daughter needed a small adu...

Rockrider small mens

Mr h javed

Rockrider 120

Christmas gift

Bought for my 11 year old son

Bike

Get what you pay for

Bike for my son

Excellent

Best mountain bike

Good quality but too hard to peddle on

excellent bike

Mountain Bike

Paul

An Excellent customer service

Rockier bike

Great bike for pre-teens

I love to ride my bicycle

recommending

Great bike

Asif Afinwala

Set up badly - gears slip and back break biting

ROCKRIDER ROCKS

Mountain bike

Lovely bike

Brilliant purchase

Good bike. Great service.

….

Easy to ride

Cycling

King

Great start

very good bike

New bike

excellent bike especially for the price

Superb Bike and great value for money

Mountain Bike Rockrider ST 120

Discs

Excellent bike for the starter

Très beau vélo, beau design. 

Vélo enfant bleu. Belle couleu...

Je refais mon avis quand au dé...

Un cadeau d'anniversaire un pe...

I bought this to replace a 20 ...

I bought two of these, one for...

Super pour un premier vélo de ...

They have a good variety of qu...

Pretty sturdy. Good handling. ...

I did A LOT of research before...

Sg120

The perfect bike!

Parfait pour un débutant

Excellent rapport qualité prix...

Ce vélo est super. Il vient de...

Bon vélo en lui même. 

Mais...

Très bon accueil 
Vélo esthét...

Vélo de montagne

A very nice bike

Vélo de montagne Rockrider

Très bon achat

Touring Mountain Bike 27.5 in, ST 120