Rockrider 300 Mountain Bike - Black



Made for occasional mountain biking.
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. SHIMANO 21 speeds. 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. Screws with 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, wider, "hammock" style B'TWIN ERGOFIT saddle for good distribution of pressure points to make it more comfy.ORB'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 chain guard, bell, front and rear lights, and wheel and pedal reflectors.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.
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.
SizeM / L

WHEEL SIZE26 inches

WEIGHT14.7 kg in L w/o pedals

Life warrantyFrame, fork, handlebar

SUSPENSIONNo suspension

Information / Concept / Technology
Frame : 100.0% Steel

Product test
We also advise beginners to wear cycling shorts with a protective pad and/or use a gel saddle cover to improve comfort.

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



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Not clean when delivered
Used for 1 week or less
I booked this bike from Decathlon Sarjapur along with a home delivery. When delivered, I found there was lot of dust in the frame. Surely, it could have been cleaned before delivery.

Also, there is problem in gear shifting. In the beginning, I thought this is because its a new bike. But reading all the reviews, i feel this problem may occur again and again. I feel, this is because I was given a bike on the stand and not a new one. Can i get another bike, in case if I am not happy with the gears??
Delivered on time
The bike was not cleaned before delivery
Response of the brand
Hello Sir, 

Thank you for taking the time to give us your review. Apologies for delivering a dusty bike. We definitely should have cleaned it. Since its a new bike, I suggest you write to our customer care and also get in touch with the store. They would be able to replace the bike only if it's in a new saleable condition. 

Deepak Babu E-sport manager DECATHLON
Not ok on painting
Used for 1 week or less
Painting is not satisfied.
Great handling,more grip,more braking.
Painting is not proper its coming off
Best cycle for mountain
Used for 1 week or less
To create a sub Rs.10,000 adult bicycle is always a challenge. Btwin as a brand have been known to give out the best specs possible at a competitive price. The Btwin VTT Rockrider 300, a MTB inspired commuter bicycle is also a model which has been around for quite a few years now. We got the opportunity to review this bicycle and this is what we thought.
Great handling,more grip,more braking.
No suspension
Super shop
Not apt for daily use,exceptional customer service
Used for 3 to 6 months
Bought this cycle in Decathlon, Coimbatore. Did not have a clue about cycle variants such as mountain bike, road bike. I asked for a cycle for daily use and to reduce weight, and I was told this one is the best. Sales person lacked knowledge and I believed him and bought this cycle. After buying, used for a week, felt not at all comfortable, seating was bad, not ideal for daily use and stopped using after a week.

This cycle is not meant for plain roads, this is for occasional mountain biking which I came to know after buying the cycle. I was mislead, however, I spoke to Mr.Bala, manager and told about my experience, and they were happy to give me full refund. Hats off to the manager, and really hope that customers are given clear details about different variants of cycle and which will suit them the best.
Looks sturdy
lacks comfort, not recommended for long rides
good product but not upto expectations
Used for 1 week or less
using it for a week. Even for some small bumps on roads the vibrations are transformed to handlebar and after a brief ride i feel pain on my elbow. I thought even without a suspension the brand's engineering would save me from elbow injuries but this is also like anyother ordinary cycles that comes with rigid fork. with this much money spent on this cycle i can't compomise it for my elbow injuries. Other than this problem, i like this cycle.
The entire look is awesome
even for 10k ride, my elbow pains
its good but..
Used for 3 to 6 months
i brought this bike 6 months before from decathlon thrissur . now my handlebars are rusted and the gears are not proper, everytime i went to decathlon they tune the gears of my bike eventhough it repeatedly showing improper shifting . i've a bad experience with this bike
good breaks and quality
gears and painting
Good fab
Very good comfortable bike
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