27.5 Inch Mountain bike Rockrider ST 120 Disc
Sale price: 142.000 KD
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This 27.5" mountain bike has been designed and developed to best suit getting started with mountain-bike touring in dry weather, for rides of up to 90 minutes.
Change speeds easily on this efficient and easy-to-handle ST 120 mountain bike. You will feel the precision and lightweight provided by the single chainring (1x9 speeds) and mechanical disc brakes.
Select a size
Enjoy touring: raised position, 80 mm suspension, hammock saddle, FLEX seat post
Adjust your speed without thinking: 9-speed single-chainring drivetrain.
Control your trajectory: cable disc brakes, tyres with side knobs
Pedal efficiently: light aluminium frame, 9 speeds and fast tyres.
An ultra-strong MTB: welded saddle, double-wall rims.
ROCKRIDER offers a lifetime warranty on the frame, handlebar and stem.
Product Lifestyle Image gallery
Love it, its a great bike. Sturdy and easy to ride. Brilliant
Couldn't fault the product, comfy and perfect for what I need. The service we received from Krasen at the Coventry store, answered all our questions, built the bike in store and carried out thorough checks to make sure we had the perfect size and great communication throughout the build and collection. Thank you!
Very good value for a low priced bike
We are glad to hear you are happy with our ST120 bike.
Thank you for taking the time to leave your feedback.
Sports Advisor (Customer Service)
Decathlon UK Limited. Company number: 03140144. VAT number: GB679262296.
Registered office: 9 Maritime Street, London, SE16 7FU.
I purchased the bike on 22/01/22. On the second time using it which was a week later, I was lowering the gear when the derailleur completely snapped off. Uncertain as to whether this was a fault with the bike or if it was not properly/competently safety checked.
Great bike lovely build worth the money
on ride , xxl size and colour black / blue
Purchased for my son. So far so good after 6 months of daily use.
Lovely bike. Purchased for 11 year old daughter. Good quality and easy to use
I am very pleased with bike & a very good price, as always good service from DECATHLON.
After few kms looks very good,gears,brakes ok..i hope this bike will good like model rockrider 100.10 000 km without problems..Just punctures...
Fantastic service great customer service experience, swift, polite and friendly staff very professional.
Thought it would be a good hybrid/get around bike for the price but once it came realised it wasn't. Disc brakes were rubbing, which I get is usual but still annoying. I am 180cm so opted for size large which on the sizing chart says goes up to the height of 184cm but the seatpost was on max height for me to fit on it properly. Also, the gears jumped around alot under any sort of pressure, and living in a hilly area this was a nightmare. The gears also jumped occasionally when I was just cruising. In just 50 minutes of riding it - I gave up and am trying to get a refund; not a good experience.
Nice and easy to adjust handlebars / leavers / seat. Gear change and brakes work great with no effort needed .
- 100% Aluminium
Several sizes available:S: between 1.50m and 1.64mM: between 1.65 m and 1.74 mL: between 1.75 m and 1.84 mXL: between 1.85m and 2.00mTo 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.
With a heavily sloped top tube and a wide range of sizes (from S: 1.50 m to XL: 2 m).The ST 120 mountain bike frame is UNISEX.The ST 120 mountain bike is available with the same frame in a WOMEN'S version: fitted seat, narrower handlebar, shorter stem, fork with a more flexible spring, and brake levers that are closer together.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.
Our team of mountain bike enthusiasts created this ST 120 mountain bike at our B'Twin Village in Lille, France.Recreational mountain bikers told us they wanted comfort, effectiveness and durability. Based on that, we designed and tested the ST 120 mountain bike, involving MTB riders at every stage.
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.
The 80 mm front suspension helps you get started with overcoming obstacles on slightly uneven trails easily.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.
This mountain bike has no rear suspension.It is a "semi-stiff" mountain bike: perfect for beginners launching themselves into their first mountain bike touring rides. Compared to a full suspension mountain bike (with rear suspension), the advantages are clear: this mountain bike is lighter; you spend less energy on flat ground.
The single chainring is easy and efficient to use:1 chainring and 9 speeds.Accelerate on the flats and easily tackle the climbs.With a single lever on the handlebar, you can change gears while hardly thinking!-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
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.
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 (350mm or 400mm long depending on the bike size). Its smaller 27.2mm diameter provides your seat with natural flexibility, 30% more than a standard solution.
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.The brakes can be applied using only two fingers.3 or 4 sets of 10 dry, intermittent stops are enough to break in your pads.We recommend that you have your brakes checked at least once a year.
The 27.5" wheels of the ST 120 are tolerant and sturdy, with 19 mm double-walled rims with 28 spokes.Start overcoming obstacles fearlessly, including small rocks, cracks, holes and bumps!Because your first rides 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.
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.
We added a quick release system for easily removing/reattaching the front wheel.Our advice: a bike rack is an easy way to transport your mountain bike without dirtying your car.
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
Your bike's fittings (chain, derailleur, brakes, etc.) will adjust over time. Take advantage of a free servicing within 3 months after purchase. Our technicians will carry out a 13-point inspection of your bike. Just come to your nearest Decathlon workshop with your Decathlon card and/or receipt.
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27.5 Inch Mountain bike Rockrider ST 120 Disc
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
|Weight Thresholds||Shipping within California||Shipping outside of California|
|> 9 lbs||$20.00||$25.00|
|> 30 lbs||$50.00||$65.00|
|> 100 lbs||$100.00||$125.00|
|> 200 lbs||$200.00||$230.00|
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.