Rockrider 300 Mountain Bike - Black



Made for

occasional mountain bike sport touring.
The essential recreational MTB: sturdy steel frame, 21-speed Shimano drivetrain, all-terrain tyres, and V-brakes for more braking power.

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Cycling comfortSteel frame and fork, comfortable material. Raised handlebar. Ergo Fit saddle.
EfficiencySturdy frame and fork. 21-speed Shimano.Wide, durable rims.
PrecisionDual V-brakes for more braking power. All-terrain tyres.
Ease of useGrip shifters. Built-in chainring and derailleur guard.
Lifetime warrantyB’Twin offers a lifetime warranty on the frame, fork, stem and handlebar.
WarrantyLifetime warranty on frame, handlebar, stem, fork. 2-year warranty for parts (excl. wearing parts)
Technical Information

Recreational mountain bike geometry made from hi-ten steel with oversized tubes for increased durability. Three coats of paint provide frame with long-lasting protection. Available in 2 sizes.Lifetime warranty on frame.
Rigid fork made of curved steel for added comfort.Lifetime warranty on the fork.
No rear suspension.
Steel, triple-chainring chainset (22/34/42 teeth), with a sturdy plastic guard. Shimano TZ30 3-speed front derailleur. Shimano TY21 7-speed rear derailleur. Shimano TZ21 7-speed freewheel, 14/28 teeth. Microshift grip shifters for changing gears. KMC Z51 chain.
Aluminium 2-finger brake levers, V-brake callipers with helical springs: more powerful and progressive braking. Screw hardware has anti-corrosion treatment.
Steel MTB handlebar, 580 mm wide.
Semi-raised steel 105 mm long MTB stem.
Aheadset headset: shock-resistant and rigid steering. B'Twin Sport 300 grips.
Exclusive B'Twin Ergofit saddle with a wider "hammock" shape that evenly distributes pressure, resulting in a more comfortable seat. OR B'Twin Sport 100 MTB saddle made from PU.
Seat post
Steel seat post, 25.4 mm in diameter, 300 mm long.
Single-wall aluminium rims with 36 holes for increased durability. Quick-release front hub for easy removal of the wheel (for repairs or storage).
26-inch all-round mountain bike tyres offer high performance on roads as well as excellent traction on trails.
VP platform pedals with bearings, offering excellent grip.
Comes with a derailleur and chainring guard, bell, front and rear lights, and reflectors on the wheels and pedals. Frame compatible with a rear pannier rack, baby seat, stand, water bottle and bottle cage, front and rear mudguards, saddle bag, etc.
14.55 kg in size M without pedals.
SizeM / L

WHEEL SIZE26 inches

Weight14.7 kg (size L) without pedals

Life warrantyFrame, fork, handlebar

SUSPENSIONNo suspension.

Information / Concept / Technology
Frame : 100.0% Steel

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.


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So sent worth for its price
Used for 2 to 8 weeks
I bought a cycle which was kept in stand
Within 1 month the Gear shifters are not workin,it's making weird noise,the paint is coming out,and the gear protection thing came out
I wish they could replace my bicycle
Light weight
Gear shifter paint job breaks delicate
Response of the brand
Hello Chanakya,

Thank you for taking the time to give us your review. Apologies for the bad experience you have had with your bike Rockrider 300. We have 2 layers of painting done on the frame of the and it is abnormal for a new bike to loose paint. Please get the bike to our workshop they will inspect the paint and the gears for you. If you are still not satisfied with the service you may ask for a new bike as well. 

Deepak Babu E-sport manager DECATHLON
Chanakya found this answer helpful
Rides like a normal cycle
Used for 2 to 8 weeks
hi everyone..i bought this cycle a few weeks ago from vytilla showroom(Kochi) .Rididng this on the road feels like a normal cycle only.The wrist of my hand pains always when i ride this for a few kms which is the major defect that i feel. The height of the handle bar could have been a bit higher (i bought an L size) , but the ride is smooth though if the road is good. I think the product is overpriced a little.The brakes are of good quality
all parts are of excellent quality
handle position could have been a little higher
Very Bad experience with the product
Used for 1 week or less
At 1st when i went to the STORE in BHUBANESWAR, they gave me the bicycle which was already there in the STAND. FORKS in the front rim are bent. I have ride the bicycle only 3times and chain is not at all smooth. Lots of problem in the gear changing, although i have been changing the gear as per the guidelines. I am not at all HAPPY with the bike. I hope the STORE provides me another bicycle as the present one is already a defective product.
They sold me the bicycle which was in the STAND
Response of the brand
Hello Debadutta,

Thank you for taking the time to give us your review. Apologies for the bad experience you have at our Decathlon store. I will get in touch with the store, explain your experience and look for the best solution. Request you to give me some-time for me to process this internally and then the store team will get in touch with you regarding the same. 

Deepak Babu E-sport manager DECATHLON
Super shop
Verified purchase What is a review "Verified purchase" ?

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The label "Verified purchase" lets help you judge the reliability of a review.
Used for 2 to 8 weeks
Rockrider 300 is a good product but seat is not so comfortable.
Not so comfortable
Read this before you buy rock rider 300 for sure
Used for 1 week or less
i bought a rock rider 300 L size in decathlon store, Coimbatore. just after four days of use this is making me feel very bad and annoying about my decision to buy this. the following reasons are
1) I am 6' feet height and the handle bar of this MTB is SHORT (in store they told me it can be adjusted but it actually cant) and just after few long rides I am feeling very uncomfortable. (Persons of height of 5'11 or above think twice before buying this model)
2) just after two rides there was ridiculous noise from break shoe, I took it to store the very next day. NO RESPONSE from store person
3) during Gear shifting I could find many times the gears are slipping. In store they are not checking properly and telling me every thing is OK. Comparing responses Before you buy and after you buy there is a total change, not happy with this.
4) poor knowledge from staffs regarding the SPECIFIC MODEL BIKES made me ended up in buying this i feel.
Light weight based on the entry level MTB
gear shift , chain, break sound, handle bar height
Great experience with Rockrider 300 , superb MTB .
It is wonderful , only the problem is tyre loss air ,
Tube not on expectations,
If u r paying 11,000 then u don't want to compress Air daily in your MTB ,
rear tyre loses air
Used for 2 to 8 weeks
just after 2 days when i filled air in rear tyre.. rear tyre is behaving absurd. there is no punture... valve is shitty, was filling air using compressor.and it lost all air as if i had pressed the pin of the valve..

loses air again and again.... whereas front tyre is okay and completely filled.
something is not right with rear tyre...
this is what we DO NOT WANT IN A BIKE.
its really really annoying....
i did a mistake
bought from ghaziabad indirapuram store.
Response of the brand

Hello Harshit,

Thank you, for taking the time to give us your feedback. I apologise for the inconvenience caused due to our bicycle Rockrider 300. As you have rightly said the problem seems to be from the valve of the inner tube. Please let me know when you will visit the store the next time. I will have an inner tube installed for your rear wheel. We are sorry again for the problems you had to go through. 

I remain available if you need anything. Feel free to contact me on my e-mail. 
Deepak Babu E-sport manager DECATHLON
I am disappointed
Used for 2 to 8 weeks
I had a lot of expectation but was disappointed mainly because of lack of technical knowledge among the staff in gear adjustment resulting in highly inaccurate and rough gear. Also a flexible handlebar stem could have helped in making the handlebar a little bit more flexible. Staff was not ready to put in a flexible stem even if I was ready to pay extra. The bike is three weeks old, but not enjoying the ride.
Mostly a vlaue for money product
Inaccurate gear shifting, inflexible stem
Satisfied with the buy
I have bought this bike from your store in chennai. I have driven over 600K.M with it. The bike's shifters seems to be a bit off it is not proper and that when shifting gears the there is always a problem. Since it is a grip shifting the adjustment needs to be perfect I think the condition I know now is not good the chain touches the shifting metal and it gives a sound while driving. Also I am 5'11 I bought the large size after some research, but the handle bar height is not perfect for me. The riding position for seat height and the handle bar stem height is not proper so which makes me but more pressure on the hand which causes discomfort in my hand.