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Triban GRVL520 Subcompact Gravel Bike
Our new Gravel bike has a new specific geometry, Tubeless Ready Gravel wheels and tyres, Shimano 105 and Sub-Compact Praxis 48/32 provide comfort and versatility on rolling trails
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San Francisco, 735 Market St. Options
Select an available color and size to see options.
About this item:
- New T6 6061 Aluminum Triban EvoG Frame
- New Triban EvoG Carbon fork with an aluminum steerer tube.
- Shimano 105 Groupset with SubCompact 48/32 - 11/34
- TRP Hydraulic disc brakes
Product Features

User comfort
GRVL gravel-specific geometry is more comfortable and versatile
Precision
The Shimano 105 R7000 groupset, front and rear derailleur, brake levers.
Brake control
Hydro-mech disc brakes: effective, progressive braking with semi-metallic pad
Efficiency
Sub-Compact Praxis ALBA48/32 suited to rolling terrain, for a smoother ride
Versatility
Inserts for pannier rack & mudguardsCompatible with 700.42mm and 650.47mm tyres
Lifetime warranty
Triban guarantees the frame, stem, and handlebars for life
Questions & Answers
Look for product information, frequently asked questions, opinions...
Question:
What is the stand over height of these bikes? Particularly the XS size.
Answer:
Stand over hieght measured from the nose of the saddle is 27.75" - keep in mind that the person evaluating the standover should measure thier inseam with shoes on
Question:
Does the front fork support a 180mm brake rotor?
Answer:
Unfortunately not - 160mm is the max.
Don't see the answer you're looking for?
Product Customer Reviews
excellent value bike. the level of equipment is far in excess of similarly priced bikes. would highly recommend. it rides great.
Excellent bike amazing value
Really impressed with this bike. Have just used for 3 day cycle from north to south Wales. Mainly off-road. Performed really well on some very rough tracks with no mechanicals. Chainset has good range so able to grind up big inclines as well as get decent drive down hills. Couple of excursions into bike parks where it was nimble and stable despite having panniers. Also use it for commuting and errands around London.
I love this bike, it;s beautiful to ride - But I've had it for three months now and I've had three punctures during that time - riding on London roads. And no - not glass, or nails. Each time it was a thorn that had gone straight through the tyre. For context I hadn't had a puncture in the last 4 years on my old hybrid. My local Decathlon didn't stock any alternative tyres it would "recommend" for the bike, so I guess I'm going to be visiting my local independent shops, looking for replacement tyres for a £1,000 bike, Sad.
It is too early to comment about this specific bike, but a similar Triban 520 (the road bike version bought in 2016), wheels aside, has been both reliable and cost-effective to own.
Best bike for the price. And Decathlon service is always excellent.
The bike is excellent from many points of view. The thing I liked immediately is the comfort, the ease in finding a comfortable position immediately; it is a bike that is suitable for long rides and many kilometers without tiring. The brakes are really good, after the necessary break-in I can say that they brake without hesitation and the braking is well modulated. The road holding of the standard tires is good but, for those like me who come from MTB, it is necessary to gain confidence and learn to trust narrower tires. The gear change does its job but I found the adjustment of this set more complicated than it should be. The defect, if that is what it is, is the range of ratios that is too long. The 48/11 on flats allows you to travel quickly and without too much effort, on the other hand the 32/34 uphill, if you are not trained, is rather hard to push; on asphalt, on the slopes of road climbs, you can still climb based on your fitness level but on trails with double-digit slopes a shorter ratio would be very useful. The precise adjustment of the gear change, between the front and rear derailleur requires quite a bit of time, and despite everything on some changes between one sprocket and another I still find some uncertainty. In any case, a bike with an excellent quality/price ratio.
Perfect bike
After a year of experience with this bike, I am a little disappointed with the quality. The first impressions were good. Rear wheel with a broken spoke, the bottom bracket to be changed after a year. Recurring infiltrations of impurities in the headset, the derailleur seems of very modest quality and lacks precision and I'm not talking about the brakes which are also of average quality. In short, if you start gravel it can do it but you will be forced to move to another quality if you persevere in your practice. In summary, a very average bike compared to the competition.
I have just ridden 19000km with my gravel bike (stony, sandy, earth, mud, tarmac tracks) for the price a good bike the groupset is great (except the brakes be careful) the wheels buckled every 3 rides then the rear wheel the spokes torn off changed under warranty but not the same model, buckled again so I bought a pair of Mavic no more problem chain changed at 10000km 2 pairs of front rear pads rear tires every 3000km before 4000km on the other hand no more paint on the head tube the casings rub not pretty I thank the Decathlon store Perpignan my 5th bikes and soon my 6th bikes and especially at CHRISTMAS top seller knows his job small although at the repair workshop mechanic not too friendly cordially
Very nice bike. Strong point of the bike. The mechanical hydro brakes work very well. The road tires don't have too much friction, and allow you to ride at a good speed despite everything. Good grip on slightly greasy paths. Weak point. The paint is nice, but will have to keep an eye on it. In my opinion, it will get scratched very quickly. As for the store, a little disappointed, since I bought the bike with self-locking pedals as well as a bag and bottle cage, everything had been mounted, but I could not recover the original pedals which had been misplaced. And also the clips normally supplied with the pedals were missing, which I recovered since, I realized it when arriving at the car, a little disappointed also, I left the store with the bike to go back directly with it, the saddle adjustment was not offered the derailleur. As for it, it is also a little to be reviewed.
Being between sizes, I opted to take the seller's advice and go down a size, but I was ultimately rather disappointed; the bike's size isn't suitable for long rides. After an hour, I started getting neck pain! If you're between sizes and go on long rides, go up a size. Unfortunately, I can't get a refund for the bike; the wheels have been replaced (that's the bike's only real flaw, but that's normal, as it's a fairly entry-level bike!)
Initially attracted by this bike as a replacement for an entry-level model, I quickly became disillusioned as the necessary maintenance increased. The brakes are a nightmare. If the system isn't perfectly adjusted (rarely the case after riding for a bit), the brakes stop working at all. It's not a pad problem, just that the brake housing has gone out of adjustment, and obviously oil has leaked onto the disc, which becomes contaminated. After having to change the brake disc twice, the workshop told me it would probably be a good idea to replace the braking system, as they didn't have a good reputation. So brakes + cables + installation = €300. I thought I'd done most of the work, until I changed the crankset. When it came time to change the cassette: customer service gave me a product reference, except that this reference wasn't compatible with the crankset; it wouldn't fit. The workshop is unable to order the correct part number, so the entire crankset also needs to be replaced. Except that the original crankset isn't available either; it needs to be upgraded from Praxis to Shimano. Be careful, the chainring sizes and therefore the gear ratios will be different... But the workshop responds, "Well, it doesn't matter, he's still riding the bike." Incidentally, you'll have to buy a new crankset and pay for the replacement just to replace the bottom bracket (+€150). In short, the bike as sold WILL need structural changes during after-sales service, and customer service doesn't care. It would be important to clearly warn customers: NO, spare parts are not available for this customer, contrary to what we indicate on the product sheet.
Very suitable for my occasional use even in the mountains. Wide handlebar at the bottom, hard to grip when going downhill.
Much more comfortable than my previous bike, which was made of steel. It makes a difference on rough roads. Behaves very well on a daily basis to carry my things for work or to do the groceries or other errands. I have done several 100-120 km rides on variable terrain without feeling too tired or uncomfortable. I do a lot of climbs in Gatineau Park. No worries, it can be done without even using the smallest chainring. The bike is very versatile. This is my first bike with disc brakes: especially in rainy weather it works better than my previous brakes. And it is much more pleasant when you have to remove the wheel. I hesitated for a long time before buying it and I have no regrets. I have no opinion on the saddle, which I immediately changed. The service at the Ottawa store workshop has been great in quality and also in speed the few times I have used it.
Size Guide

Additional Product Information
Composition
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, opting for the smaller size will give you a more comfortable position that makes it easier to tackle gravel trails.XS 155 166S 166 173M 173 181L 181 186XL 186 196
Frame
New Triban EvoG frame made from aluminium 6061 T6, with its new Triban GRVL gravel-specific geometry for a better balance between comfort and steering.Strong, versatile frame: can accommodate a mudguard and pannier rackWeight: 1750 g in size M.9x135 axle spacing for a Quick Release QR axle / Flat mount brake calliperNormative compatibility with tyre cross-sections up to 700.42 and 650.47
Fork
New Triban EvoG fork with carbon blades and aluminium 1Inch1/8 Aheadset steerer tube.This fork combines comfort, low weight, and precision.The carbon has been designed for good lateral rigidity and good filtering of frontal vibrations.Flat mount calliper.2 inserts on each blade for installing a front pannier rack or a bottle cage. Maximum load on the fork: 10 kgCompatible with tyres up to 700.42 / 650.47
Handlebar / stem / steering
Triban aluminium gravel handlebars with a 16° flare for better grip and excellent comfort.Handlebar width (axle-to-axle): XS / S: 420mm.M / L: 440 mm.XL: 460 mm. Stem: XS: 60mmS: 70 mm. M: 80 mm.L: 90 mm.XL: 100mm
Drivetrain
SubCompact 48/32 - 11/34 drive train for greater versatilityShimano 105 R7000 shifters Shimano 105 R7000 front derailleurShimano 105 R7000 rear derailleur with 11 speeds and long screedTotal weight: 843 gSo-called InchShadow Inch rear derailleur for better protection when gravel biking. The derailleur remains under the cassette and does not spring up and hit the chain stay, reducing the risk of it coming off.
Crankset / cassette
MICROSHIFT CS-H110 11S 11/34 cassette(11/12/13/14/15/17/19/21/24/28/34).FC PRAXIS ALBA M30 48-32T bottom bracket.Crank length varies according to size of bike:XS, S: 170mm.M: 172,5mm.L, XL : 175 mm.KMC X11-1 + CL555 11S / 112 chain
Brakes
TRP HY/RD disc brakes.Cable-operated hydraulic pistons, ensuring reliability and efficiency 160mm disc at the front and rear. Flat Mount assembly.Jagwire anti-compression sleeve to guarantee precision and efficiencySemi-metal brake pad TRP (M515/M525)Adjustment of the TRP/RD brakes is explained in the following video (at 10:20 min )=> https://www.youtube.com/watch?v=BcZKtFI8Els
Wheels
Triban Gravel 7000x23c Tubeless Ready wheels for effective performance and comfort on rolling trails6063 T66 aluminium.ETRTO dimensions: 622x 23 C.Height: 19 mmCrossed steel spokes (28 front and 28 rear).Sealed cartridge bearings.9x100 front, 9x135 rear QR axle Weight per pair (without cassette and QR): 2.15 kgTESA TLR* rim strip*For converting to tubeless, add 2 tubeless valves (product ref: 8551979) + tubeless anti-puncture liquid sealant (product ref: 836339)
Tyre
Hutchinson Touareg 700x40, Tubeless Ready tyres with hardskin puncture protection490 g per tyreSkinwall dual-rubber flex bead 127 TPI carcassDimensions: ETRTO 40-622 / 700x40cMin inner tube pressure: 2.5 bar / 38psiMax inner tube pressure: 3.5 bar / 51 psiTubeless pressure: 2.5 to 3 bars (85kg rider)This bike can be equipped with tyres up to 700.42 or 650.47Minimum compatibility requirements: 23c wheels and tyres with a cross-section of 37
Product testing
In order to assess this gravel bike, we performed numerous tests in the lab and on roads and trailsLAB TESTS for ISO 4210 Standard: LATERAL RIGIDITY, FORK FRONT SHOCK ABSORPTION, COMFORT (GEOMETRY)FIELD TESTS: LONG RIDES, GRAVEL TOURING, many rides on all types of terrain (roads, gravel, trails, country roads, woodland, mud, rocky ground, etc.)
Storage instructions
Store your bike in a dry, cool place. If riding or storing your bike in a salty environment, be sure to wash your bike after each use.
Guarantee
Lifetime warranty on the frame, 2 years on the fork, 2 years on peripheral components.
Origin
Imported

Triban GRVL520 Subcompact Gravel Bike
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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.
