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Triban GRVL120 Gravel Bike

Regular price: $999.00 Regular price:

We have designed this gravel bike to make it easy to discover gravel riding. Easy and versatile: single chainring 38-11/40, mechanical disc brakes, XL flared handlebar, tubeless wheels and 38 tires.

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Sale price: $999.00 Regular price:

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San Francisco, 735 Market St. Options

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About this item:

  • 6061 T6 aluminum frame with semi-integrated headset
  • Comfort-oriented frame geometry with a higher steering socket that offers a more upright position than a classic road frame
  • Microshift H100 10-speed 11-42 cassette
  • Promax DSK disc brakes
  • Lifetime Warranty (frame, stem, handlebars)
Model: 8629957

Product Videos

Product Features

A photo of the Triban GRVL120 Gravel Bike in use
A photo of the Triban GRVL120 Gravel Bike in use

Triban GRVL120 Gravel Bike | discovering gravel biking. Easy, versatile: single chainring 38-11/40, XL flared handlebar, 23c tubeless wheels and 38 tires

We have designed this gravel bike to make it easy to discover gravel riding. Easy and versatile: single chainring 38-11/40, mechanical disc brakes, XL flared handlebar, tubeless wheels and 38 tires.

Cycling comfort

Comfortable geometry, raised position, carbon fork, alu frame

Brake control

Mechanical disc brakes: effective and progressive, even in damp conditions


Can take a mudguard and pannier rack in the front and/or in the back

Questions & Answers

Product Customer Reviews

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807 Reviews
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Triban GRVL120 Gravel Bike, dusty green - glossy finish Image 11 of 10
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Very good bike, but some problems

Very good bike to use for commuting as well as for gravel/road, light and comfortable, versatile, however the brakes release quite quickly and above all, the tires really need to be changed because they are very fragile, punctures are very frequent

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1 crown x 10 gears is not good

Bought in December 2022, one ride a week and in November 2023 I took the bike to the Decathlon laboratory for free maintenance, informing the technician that the chain often falls with low sprockets. I collect the bike and on the first exit (40 km) the chain falls off twice and the first and second sprockets go in with difficulty after several turns of the pedals. I take the bike back to the workshop and they send it to the regional where it still is today. I will return it by the deadline and get a gravel with 2 chainrings.

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Fantastic gravellina

Recommended for everyone. Still a few km travelled, but all with satisfaction

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Right compromise

Good product.. The right compromise for beginners and for those who use it not excessively. Excellent value for money

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For cycling it's perfect. Versatile and efficient at my level. I'm just waiting for news about my "velo registration card"

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Satisfied with the gravel but not with the assembly

The product is good but I realized shortly after purchase that the cassette has a problem and is oscillating. They will repair it under warranty. Quality control should be improved

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Poor quality cassette sprockets

A few months ago I bought the Grvl 120 and the cassette sprockets are crooked and of course the chain jumps from the sprocket, I have to adjust the brakes because you press the lever all the way and it doesn't brake, it is very expensive for me to make trips to Decathlon ( 30 kms going and 30 returning) and I pay everything out of my pocket. Minimum comp could bring Shimano Deore

A good bike, very poorly assembled

During the first tests with this bike, I noticed that there was play in the steering, that the front pads came into contact with a fatty substance and were no longer effective. The rear wheel hub was too tight and was braking the wheel. The rear disc is slightly warped. Even if I am happy with the product, I would have liked more seriousness in assembling the bike.

Good bike, good components but assembly problem

After almost 2 months of using the bike, I am rather satisfied, it is robust, the tires grip well, the brakes are effective and it is rather light. On the other hand, the assembly of the bike by Decathlon leaves something to be desired because the rear wheel cassette was mounted crooked and the low gears jump. It doesn't seem like an easy problem to resolve independently and it's annoying to have to go to the repair shop and potentially pay fees for a bike that you bought for €800...

Better than expected

Excellent product for starting the gravel adventure. The Mono Corona creates discomfort only on descents as above 55 km per hour you lose pedaling

Price-performance wonderful

I'm super happy with the bike. I ride to work along the river, which is great thanks to the wide tires. There were a few errors at the beginning, the front brake disc was inaccurate and the bell was installed incorrectly, but Decathlon Service repaired it immediately and free of charge.

A super versatile bike but very poorly equipped

I bought this bike as an everyday bike, a sport/gravel bike and a travel bike (bikepacking). After 3 months and less than 1000km, the pads froze 3-4 times even though I changed them (this is not my first disc bike, I know how to break in...), the freewheel broke (I finished the 30km of my outing on foot...) and the derailleur lever was starting to show weaknesses (pawl that goes down several gears at once). Decathlon's after-sales service has always been on top of helping me, and I thank them. But that's too much trouble for a new bike for my taste. So I moved up to the next level!

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handlebars too high and…

handlebars too high and too large, assembly leaves something to be desired, bolt not tightened, pedal impossible to change, you have to know some mechanics

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Men's gravel bike

Great bike. Price performance excellent.

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Brakes, saddle, tires

I've been using the bike for several weeks now. It rides very nicely and easily and also shifts well after I adjusted the shift cable on the handle a few times (cables naturally lengthen in the first few weeks). After replacing a few parts, it is a great bike for the weekend and my commute (8km ) You should definitely replace the saddle - the pre-assembled one pushes off the soft parts And the brake discs - ideally ones with significantly smaller holes. For a hundred euros less I could unconditionally recommend the bike. So it's an okay offer
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Size Guide

Size Guide Visual

Additional Product Information


Frame (for bike): 100.0% Aluminium

Choosing the right size bike

You should choose the size of your bike based on your height, as well as your build (arm span and leg length).If you are between sizes, the smaller size will give you a more athletic position, while the larger size will give you a more comfortable position.XS 5'1” 5'5”S 5'5” 5'8”M 5'8” 6'L 6' 6'3”XL 6'3” 6'7”You can try out a Triban 120 disc in the store, since the frame geometry is identical.


Comfort-oriented frame geometry with a higher steering socket that offers a more upright position than a classic road frame. The elongated top tube and shortened stem allow this gravel geometry to move the fork forward for better compatibility between your feet and the front wheel.6061 T6 sloping aluminum frame with semi-integrated headset.Frame weight, size M: 4 lbs


Carbon fork and aluminum pivot that are more lightweight and offer more precise directional control.Aheadset 1”1/8 head tube that provides great strength and rigidity to the steering assembly. Inserts in the fork to fit a pannier rack. Maximum load on the fork: 20 lbsFork weight: 1.7 lbs

Handlebar / stem / steering

Triban aluminum gravel handlebars with a 16° flare for better grip and excellent comfort.Handlebar width (axle-to-axle): XS/S/M: 420 mm.L / XL: 440 mm.Stem:XS: 60 mmS: 70 mmM: 80 mm.L: 90 mm.XL: 100 mm


Single chainring 38-11/40Precise, very sturdy MICROSHIFT XLE 10-speed shifter. Very comfortable ergonomics: The shifter is comfortable regardless of hand size. Microshift M665 rear derailleurs with ”Clutch” system to hold the derailleur and prevent the chain from jumping. It can be disengaged to easily remove the wheel.


Lifetime warranty on: the frame, stem, handlebar, and rigid fork.



Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


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