ROCKRIDER 340 S MTB - Black/Grey/White



Made for

recreational mountain biking and touring on country paths and trails.
Comfort and performance (lighter aluminium frame)

Sizes guide

This product is no longer in stock
Lifetime warrantyB’TWIN guarantees the frame, stem, and handlebar for life.
Ease of use5 sizes available for better riding comfort. 21 speeds.
CushioningSuspension fork, wide versatile tyres.
PrecisionV-brake system: powerful and effective!
Anatomic designSizes: XS(145-155cm) S(155-165cm) M(165-175 cm) L(175-185cm) XL (185-200cm)
DurabilityReinforced aluminium frame, derailleur guard
Warrantylifetime warranty for the frame, stem and handlebar. Details on
Technical Information

Reinforced 6061 T4T6 aluminium frame, exclusive FIVE geometry for versatility. Lightweight. A large selection of available sizes (145 cm to 200 cm) ensure it fits you comfortably. Easy adjustment makes sure you are comfortable and provides better control. Three layers of paint provide the frame with lasting protection. The decorations are varnished.
Fork / Suspension
Suntour XCT suspension fork, 80 mm travel Wheel to adjust stiffness. Elastomer spring technology for more reliability with minimum maintenance.
Accessories / equipment
Derailleur guard
Drive train
SRAM MRX 21 speed grip shifters for the steepest climbs. Shimano TZ30 front derailleur, Shimano rear derailleur, KMC Z51 chain.
Bottom bracket / Cassette
Chainset with 24x34x42 chain rings. 21 speeds. Steel bottom bracket with a plastic protective piece, tough and reliable.
2-finger aluminium levers, helical spring V-brakes.
Handlebar / Stem / Steering
HL 153 580 semi-raised steel handlebar, HL 215 steel stem.
Aluminium rims with 36 holes to save weight. Quick wheel release system at the front makes it easier to put your bike in the car, store it at home, or repair.
Semi-slick tyres for maximum comfort and versatility in town and the countryside.
Saddle / Seat post
HL SP200 steel seat post. PU MTB saddle. Comfortable positioning keeps you in control of your bike. Steel components ensure the bike's durability and longevity over time. Wide, comfortable saddle.
VP platform pedals, on bearings
14.02 kg in size XS, without the pedals
SizesXS(145-155cm), S(155-165), M(165-175), L(175-185), XL(185-200)


Wheel size26 inches

SuspensionFront fork

Weight14.02 kg


Sort by:
three weeks old..
Used for 2 to 8 weeks
got Mtb from Decathlon Whitefield and is very good for joy ride and city commute. but there is a problem with gears, gears slip so many times and annoying at times.
Good, not so bad...
Used for 2 to 8 weeks
I bought this product two to three weeks back. my Gear is bit noisy and last week on my way chain slipped. Gear is not satisfactory and not up to the mark. Next day I noticed my handle bar is bended a bit...though the show room is bit far and I will coming home late. Need to get checked. Show room give seat is bit hard and not so comfy. I need to buy a wider seats.i recommend the product only because of the brand name decathlon.
My gears are getting stuck and handle rotation mak
Used for 1 week or less
Hi Guys,

I bought this from Decathlon Sarjapur a week ago. My gears are not able to shift smoothly as I wold like it to. Also my handle makes sound sometimes when I turn it. The chain I feel is a little loose. I have faced issues with automatic shifting of gears when I go through a pothole. Please suggest something.
extra fittings
Used for 1 week or less
Can we fit mud guards o's b twin 7 series mtb
nice looks
could improve gear changing for faster racing spir
Response of the brand

Thank you for writing to us. For this particular model you can use the same mudguard that we use on the 7s lady. 

Deepak Babu E-sport manager DECATHLON
Excellent Ride
Superb for someone looking ringer some fitness and absolutely apt if you want to commute to work daily
Average Bike
Used for 1 week or less
I bought this bike from Decathlon Noida around a week back and started facing issues from the first day itself. I noticed the gear shifting was not at all smooth and were too noisy. To add to my woes the rear brake got jammed and started rubbing against the rear tyre. As i was in the middle of my ride i had to pull the brakes away from tire and have to accommodate with only front brakes. The saddle is way too small and uncomfortable even with additional gel saddle decathlon has to offer. This is my first negative experience decathlon with other experiences being awesome. I hope team looks into this issue.
The Aluminum frame, good looks
Gear shifting not smooth
Response of the brand
Hello Rajandeep,

Thank you for taking the time to give us your review. Apologies for the bad experience you have had. It sounds like the new bike you have bought was not tuned properly. On a well-tuned condition and the correct amount of lubrication the gear shifting is smooth. About the brakes, it is possible that one side of the brake callipers have been over tightened which restricts the free retraction of the callipers after applying the brakes.
The solution for both the problems would be to get the bicycle to our workshop. Since it is a brand new bike there will be no charges involved. Please let me know from which store you have purchased the bike. I will also send your feedback regarding derailleur to our product leader in production. Sorry again for the bad experience. 

Deepak Babu E-sport manager DECATHLON
Rajandeep found this answer helpful
It annoys me everytime i ride
Please dont buy this if u need a comfortable ride. The gears suck. Either they dont shift properly or they make a noise often while riding. Though the shifting can be adjusted i am helpless about the noise. Also the stock seat is way too small. Even a kids cycle would have a bigger saddle than this.
Overall the bike sucks!!!
Response of the brand
Hello Anoop,

Thank you for taking the time to give us your feedback. We apologise for the discomfort you felt on the bike Rockrider 340. The noise coming from the transmission can be eliminated. The drive train needs to be tuned at our workshop, cleaned and lubricated. The saddle on the bike is a sport saddle. You will get a wide saddle only on touring bikes. If the saddle is not comfortable you can buy a gel saddle which is extremely comfortable for long rides or install a gel seat cover. However, I have forwarded your review   I remain available for any more questions. Feel free to write back. 

Deepak Babu E-sport manager DECATHLON
MTB bike
Verified purchase What is a review "Verified purchase" ?

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Used for 2 to 8 weeks
Seat isnt comfortable, after using first day i coudnt sit properly for next 2 days :(
seat could be little bit comfortable
Rockrider 340
Used for 1 week or less
in my demo ride, I was not happy for the gear shifting. it was not that smooth. my expectation was little high. Decathlon Should Reduce The Price if possible. I will say.... 10 to 12,000 max looks fine for it.
Quality of Frame
Gear Shifting is Not Smooth
Perfect bike in 15K Budjet
Used for 2 to 8 weeks
Bought this bicycle 2 week ago. I riding 20 Km daily and had been for a long ride of 45 km on weekend.
As mentioned , the bike is definitely a leisure MTB so does its job well on cross country.
Recommended for general commuting and joy rides.
If you are looking for a perfect MTB or a perfect road bike, this is not a good choice.
Let me end up with a complaint, the Gears.. no smooth transmission, they often slip and make sound at time.

P.S: Im looking for a 10mm stem for my bike to reduce the top tube distance. Expert advice on this please.
Stylish frame, braking, matte finish frame