Selling price

₹ 14,999


₹ 13,999


MRP : ₹ 17,999

Made In : India

Made for Adults who are looking for city commute, occasional mountain bike and sport touring. Front suspensions give you added comfort.
The first true touring mountain bike: comfortable thanks to a more upright seating position and front suspension. A lightweight aluminium frame and Shimano tourney 21 speeds.
Sizes guide

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Cycling comfortRaised position. Ergofit ergonomic saddle. Innovative front suspension, 80 mm.
EfficiencyAluminium frame. 21-speed Shimano.Wide rims, tyres suited to faster terrain.
PrecisionDual V-brakes: powerful and lightweight. Tyres have good lateral grip.
Ease of useInnovative fork adjustment system based on rider's weight. Grip speed shifters.
Lifetime warrantyB'Twin offers a lifetime warranty on the frame, stem and handlebar.
WarrantyFrame, handlebar and stem have a lifetime warranty. 2-year warranty for parts (excl. wearing parts)
Technical Information

Exclusive Rockrider 340 frame with a raised steering position for multi-purpose use. Reinforced 6061-T4T6 aluminium that combines durability and light weight. "Sloped" unisex frame geometry is suitable for both men and women. Three layers of paint and varnished decorations provide lasting protection.
B'Twin U-Fit 80 fork, with 80 mm of travel: Innovative fork stiffness adjustment based on rider's weight (55 to 105 kg). Durable thanks to the materials and fabrication processes used. Mechanical spring with an elastomer stopper for maximum reliability and minimum maintenance.
No rear suspension. 80 mm front suspension.
Triple chainring steel chainset (22/32/42 teeth), with a plastic guard. Shimano TY21 7-speed rear derailleur. Shimano TZ30 or Microshift MS22 front derailleur. SRAM MRX21 grip shifters with speed indicators. Shimano TZ21 cassette with 7 cogs, 14-28 teeth. KMC Z51 chain, wide for greater durability.
Front and rear V-brake braking system with a helical spring for more powerful braking. Aluminium MTB brake levers that require only 2 fingers to operate.
Semi-raised mountain bike handlebar for added comfort while riding. 600 mm wide steel handlebar that combines comfort and stability.
Aluminium stem, 90 mm (XS / S / M) or 110 mm (L / XL), with a 10° angle for maximum comfort.
Aheadset-type headset for greater resistance to impacts and rigidity in turns. B'Twin Sport 300 grips have a soft-touch finish for better grip and to extend the grip shifters.
Exclusive B'Twin Ergofit saddle with a wider "hammock" shape that evenly distributes pressure, resulting in a more comfortable seat.
Seat post
Steel mountain bike seat post with a 29.8 mm diameter and 350 mm long.
B'Twin Alloy Single Wall 26" wheel. Wider for greater durability. 36 spokes for greater resistance to impact. Quick-release on the front wheel to make it easier to maintain, transport and store. Lock nut ( no quick release) on the back to reduce the risk of theft.
New Ralson Mountain Bike 26" x 1.95 tyres. High-performance tyres with buttons best suited for on road and short trails.
Flat mountain bike pedals with bearings, made from hard resin for less weight and added safety (less aggressive in the event of a slippery pedal).
14.85 kg in size M without pedals.
1) The components seen on the bicycle in the videos may change from the actual product. 2) The bicycle will be delivered in 85% assembled condition. The directions for the cycle assembly will be sent via mail ( if you have subscribed). The tools for assembly are provided with the cycle only for online buyers. 3) The 3-month, free check up is valid only if the user is able to take the bicycle to a decathlon workshop.4) All bicycle accessories need to be purchased separately.
If you will need a spare part​ to be replaced, we have it all at our workshop. You will have to drop by our workshop to get your cycle serviced.
SizeS / M / L

Wheel Size26 inches

Weight14.5 kg

Life warrantyframe, stem and handlebar

Suspension80 mm suspension fork

Information / Concept / Technology
Frame : 100.0% Aluminium

Product test
We recommend that beginners wear cycling shorts with a protective pad and/or a gel saddle cover to reduce soreness.

Stockage tips
Store in a cool, dry place, away from corrosive products and salty air.

Maintenance tips
Regularly maintain your fork (clean and grease dampers), especially in winter. Take your bike to your Decathlon store's After-Sales Service, which offers a free safety inspection on all new bikes purchased.



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Good design and all characteristic...ease
Verified purchase What is a review "Verified purchase" ?

Where review is marked as "Verified purchase" confirmed by Decathlon, this means that we could verify that the client who filed this opinion has purchased the product from us.

We can confirm purchases for the reviews expressed on a request by e-mail after purchase or when the customer has this review from his personal space.

If review is not marked as "Verified purchase", this does not mean that the author's review has no experience with the product may have given his review directly on the site without unique identification, or the product has been offered or paid.

The label "Verified purchase" lets help you judge the reliability of a review.
Used for 2 to 8 weeks
Good design and the basic mountain bike with all good charateristic
Great Bike at a Great Price
Used for 3 to 6 months
It has been 3 months now and I've covered more than 1800km on my Rockrider 340 and I tell you, its super comfortable, be it on road or on less demanding trails. The gear shifting is also good but you have to keep the derailleurs tuned for maximum efficiency and quick shifting. I usually go for rides as long as 30 to 40km on a daily basis and nothing is more comfortable and ergonomic than this bike.
it is an excellent product
this is a very googd product my uncle have taken it in 2-3 months the front 3 gear stop working then we take it to decathlon the problem was slove the service is good
Used for 3 to 6 months
I used this cycle for around 4 months. The cycle is excellent on road because I use it everyone to go to school and many places. Over all its a good cycle. But I my gears doesn't work properly. But I recommend this cycle
Gear shifting problem & Front fender not available
Used for More than 1 year
When shifting gears, the gears dont shift smoothly. even after the shift while applying pressure on pedal, the gear shifts again. Also front great does not shift to 3rd. only 1st & 2nd works.

I do not know why the front fender is not available for this bike. If i need to buy the back fender then i need to buy for rockrider 5.1 fender & use the back fender. front one is useless for me.
Response of the brand

Hello Ujwal, 

Thank you for taking the time to give us your review. 
The drivetrain/ shifting problem can be solved by tuning the shifters. I recommend you to take the bike to the closest store and let the workshop technician try tuning the shifter. If the problem is still not solved, do write back to us and we will try to give the best solution from the store. 
The mudguards that are to be used or the Rockrider 340 are separate for the front and back.  You should use the seat post mudguard for the back and the MTB front mudguard for the front. 

Gear is not working!
Used for 7 to 12 months
The only problem that i found with my bike is that its back gear is not working smoothly..
It is shifting one less than the required! i.eif i switch it to the second gear,it keep going in the 1st itself and i have to put it the 3ed to make the gear shift to the 2nd. I couldn't rectify this problem yet! Ive used this bike now for a year and this is the only problem I've faced..!
Amazing bike
Used for More than 1 year
If you are looking for a budget bike a smooth mountain bike and get good comment from the people watching you ride this bike get a Rockrider 340 florocant green
Excellent bike... happy about my choice
Used for 7 to 12 months
Enjoying riding this bike.. Me and my son uses it regularly.... comfortable and smooth ride...! One suggestion.. the self maintaining tips need to be provided.. i am staying away from Decathlon store.. the lubricating oil is not avilable online / at stores.. since long time.. Pls. help
Front Gear shifter doesn't work
Used for 1 week or less
I bought this b twin bike thinking as a quality product like many others at Decathlon. Well I was entirely wrong. The first day I noticed when I try shifting from 2nd to 3rd speed of front... It's a matter of chance and at times one might end up the chain out thrown. Decathlon Rohini guys submitted it and there happened nothing for 9 days. I called up and next day they said it's ready with problem fixed. I sent my driver and the problem was still with a funny justification that this much of nuisance is normal and quite a character of the component installed into it. And, he added, I will have to go with it. Now, what was the point to retaining the bike for 10days if it was normal and was exhibited the problems it was supposed to!
Just because they are unable or unwilling to fix, they are making excuses like this. I wrote it here, however I am quite hopeless about the steps Decathlon managers will take!
Oh yes, one star bkoz you guys don't give option less than that. Congratulations!
Response of the brand
Hello Vijay, 

Thank you for taking the time to give us your review. We are sorry for the unpleasant experience. The shifting, specifically of the front shifter can be tuned by the technician to give a perfect shift.  I will get in touch with Decathlon Rohini to find out why the problem of shifting is persisting. The Rohini store will get in touch with you to provide a solution.  We will replace the component completely if the Rohini store is convinced that it is the only solution.

Apologies, again from our side. 

Great bike.
Used for 1 week or less
Been using it for some time. It's good. Ride it before choosing the right size.
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