ROCKRIDER

AD HIING BIKE ST120 27"5 Purple

NEW LOWER PRICE
$1,999
BEFORE : $2,499
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Ref. : 8775520

This 27.5" mountain bike is designed for your first mountain bike rides, in dry weather, up to 1h30.

A powerful and easy mountain bike! At the controls of the ST 120 mountain bike, you feel precise and light thanks to the single chainring (1x9 speed) and its mechanical disc brakes.

  • S undefined
  • M undefined

Our services :

  • Free delivery for Decathlon brands orders above $399
  • All Decathlon products are eligible for lifetime return

Products benefits

Ease of handling

Enjoy the ride: Raised position, 80mm suspension, hammock saddle, FLEX stem

Ease of use

Adapt your speed without thinking: single chainring transmission with 9 speeds.

Brake control

Control the trajectory: mechanical disc brakes

Durability

This mountain bike is reinforced: double-walled rims

Technical information

WHAT SIZE OF MTB TO CHOOSE?

Several sizes exist:
S: between 1.50m and 1.64m
M: between 1.65m and 1.74m

To adapt the mountain bike to your size and morphology, here are our tips:
1/ Sitting on the saddle, you must touch the ground with your tiptoes.
2/ To adjust the saddle, your knee will be slightly bent with your foot on the pedal in the low position.
3/ If you hesitate between two sizes, choose the larger size.

LIGHTWEIGHT, COMFORTABLE AND PLAYFUL FRAME

Our designers have designed a brand new frame that is easy to step over.
This 100% aluminum CGF (Comfort Geometry Frame) frame is both comfortable and easy to handle. The inclination has been studied to keep your back straighter while the rear chainstays are shortened to ensure good agility of the bike in turns.

FRONT SUSPENSION

The 80 mm front suspension allows you to overcome your first obstacles with peace of mind on slightly uneven trails.

DERAILLEUR & TRANSMISSION: A SINGLE CHAINRING LIKE THE PROS!

Discover the efficiency and ease of the single chainring:
1 chainring and 9 speeds.
Accelerate on the flat and tackle climbs with ease without compromise.
With just 1 controller on the handlebar, you no longer need to think!

- 36 teeth equipped with 1 chain guide (anti-derailment)
-MICROSHIFT Btwin rear derailleur
- MICROSHIFT M759R shifter
-MICROSHIFT H092 Cassette 9 cogs 11 to 36 teeth
-Wide and strong KMC Z9 chain

HANDLEBAR, STEM, GRIPS

With its stem inclined 15° upwards, the cockpit of the ST 120 mountain bike is raised, accessible and comfortable

In detail :
- Aluminum stem, 60 mm long, with a 15° angle to provide maximum comfort
-620mm aluminum handlebar, for stability and control
- Slatted handles, in "soft touch" material, for a good grip, a soft and pleasant contact.

MECHANICAL DISC BRAKES

The TEKTRO TKD 116 double 160 mm mechanical disc brakes exert powerful and progressive braking at the front and rear. As for the TEKTRO brake levers: they are made of aluminum, easy to grip and precise.

Remember to have your disc brakes serviced once a year.

27.5" WHEELS & TIRES FOR DRY TERRAIN

The wheels of the ST 120 are tolerant and robust, with 19 mm 27.5 inch double wall rims with 28 spokes.
Cross your first obstacles without fear: small stones, roots, holes and bumps!
Because the first hikes are on dry ground, the DRY 27.5 x 2.0 tires are the most suitable. Their performance is optimized thanks to a very rolling central part, while their side studs provide good grip in turns.

TRANSPORT & STORAGE

To disassemble / mount the front wheel easily, we have added a quick release system.

COMFORT & SAFETY

Your bike's equipment (chain, derailleur, brakes, etc.) will adjust. Take advantage of the free revision within 6 months of purchase. Our technicians will do a 10-point check of your bike. Go to the nearest DECATHLON workshop with your DECATHLON card and/or receipt.

Warranty

Lifetime (frame, stem, handlebars). Availability of spare parts: 2 years.

Product concept & technology

Product Composition

Bike frame 100% Aluminium

STOCK ADVICE

After washing, pass a dry cloth to remove all traces of moisture. Then, store your mountain bike in a dry, temperate place, away from corrosive products and a saline atmosphere.

User Restrictions

Not suitable for XC, All Mountain, Enduro and BMX mountain bikin

TESTS

Our engineers systematically have all our products tested by mountain bikers, in real conditions. These tests complement those carried out in the laboratory and thus allow us to validate all our products before they are marketed.

Maintenance advice

Do not wash

Do not bleach

Do not tumble dry

Do not iron

Do not dry-clean

User reviews

Questions & Answers