Designed for Recreational mountain biking on paths and trails.

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SKU: S13214 (2004286)
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Delivery in 3 to 4 days

€ 213.18
Characteristics Designed for Recreational mountain biking on paths and trails.
Product Benefits
  1. Cycling comfort
    Raised position. Ergofit ergonomic saddle. 80 mm front suspension.
  2. Efficiency
    Aluminium frame. 21-speed Shimano.Wide rims and tyres for faster terrain.
  3. Precision
    Double V-brakes: powerful and lightweight. Tyres have good lateral grip.
  4. Ease of use
    Ease of use
    Grip shifters.Built-in chainring and derailleur guard.
  5. Lifetime warranty
    Lifetime warranty
    B’Twin provides a lifetime warranty on the frame, stem and handlebar.
  • Size
    S / M / L
  • Wheel size
    26 inches
    14.85 kg in M without pedals
    frame, stem and handlebar
  • Suspension
    80 mm suspension fork
  • Colour
    Black / Blue / Fuchsia
Product feature
  1. Frame
    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.
  2. Fork
    Suntour XCT fork with 80 mm of travel. Adjustable stiffness using a dial.
  3. Suspension
    No rear suspension.
  4. Drivetrain
    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.
  5. Brakes
    Front and rear V-brake system with a helical spring for more powerful braking. Aluminium MTB brake levers that require only 2 fingers to operate.
  6. Handlebar
    Semi-raised MTB handlebar for added comfort while riding. 600 mm wide steel handlebar that combines comfort and stability.
  7. Stem
    Aluminium stem, 90 mm (S / M) or 110 mm (L / XL), with a 10° angle for maximum comfort.
  8. Steering
    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.
  9. Saddle
    Exclusive B'Twin Ergofit saddle with a wider "hammock" shape that evenly distributes pressure, resulting in a more comfortable seat.
  10. Seat post
    Steel MTB seat post with a 29.8 mm diameter and 350 mm long.
  11. Wheels
    B'Twin Alloy Single Wall wheel, with a 26" diameter for greater durability. Single-walled rims. 36 spokes for greater resistance to impact. Quick-release on the front wheel to make it easier to maintain, transport and store. Lock nut on back wheel to reduce risk of theft.
  12. Tyres
    New B'Twin All Terrain Dry Mountain Bike 26" x 2.0 tyres known for their high performance (thanks to a faster middle tread section) and good grip in the turns (thanks to the side lugs).
  13. Pedals
    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. Accessories
    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, bottle cage, front and rear mudguards, saddle bag, etc.
  15. Weight
    14.85 kg in size M without pedals.
Product testing
  1. Storage advice
    Store your bike in a dry, cool place. When used or stored in a salty environment, wash after each use.
  2. Cleaning advice
    Carry out regular maintenance on 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.
  3. Product restrictions
    Not designed for MTB riding on rough terrain.
  4. Product catchline
    Comfort and high performance: Lighter aluminium frame. Front suspension fork with adjustable damping.
  5. Lab tested
    We also recommend that beginners use cycling shorts with a protective pad and/or a gel saddle cover to reduce soreness.
Product reviews
3.9 / 5
43 reviews
43 users recommend this product
Write a review
  • Poor bike

    James (United Kingdom)
    Used for 3 to 6 months
    I have had my btwin rockrider 340 in lots as a teen I use it everyday after around 4 months the bike went massively downhill I have just had the pedals and gears replaced but still the gears don't work I cannot go into gear 3 I wish I had got the btwin 520 or 540 every time I have brought it in for repair the workers told me it's my fault now they have said they will not repair in any more even thought it's under 2 year warrinty.
    Response of the brand
    Hi James,

    Sorry to hear about the issues you've had with your bike. The bike is really designed for occassional use rather than daily use. However the gears should work still with 4 months of daily use. The issue you have described is more of an issue with set up rather than the bike itelf. I suggest you call into your local store to get them to readjust this for you.

    Rob Basnett b'Twin Product Expert DECATHLON
  • Death Trap

    Ben (United Kingdom)
    Used for 1 week or less
    bike turned up, the brakes weren't aligned, wheels weren't trues. poorly set up. First ride out on this bike. Within 10 seconds in 1st gear the chain slipped off. Tried again, got some speed, moved up to second gear, chain slipped off (no chain crossing). Pedalled back down to 1st gear, chain slipped off. Crusing for 10 minutes and moved to go up a gear, chain slipped off and caught underneath the ddisc stopping muy bike. Both me and the bike went flying, i've got a couple of bumps, slammed my back against a curb and the bike was a little scuffed up. On my way to A & E now.
    The look of the bike
    Poorly Built, Dodgy Gears
    Response of the brand
    Dera Sir,
    I have just contacted you directly about this bike.
    I'm sorry to read that you came off your bike. I hope you are OK.
    Peter Lazarus UK Cycling Market Manager DECATHLON
  • 50

    Marcin (United Kingdom)
    Used for More than 1 year
  • wakes people up

    kye (United Kingdom)
    Used for More than 1 year
    I had this bike for a birthday present, and had it fitted in the shop the brakes were really squeaky its been a month since the bike was purchased and the brakes are still squeaking, really don't recommend this bike If I could trade it for the 540 I would
    Response of the brand
    This should be remedied by your local Decathlon store. They need to make sure that the front part of your block touches the rim first when braking. This is called "toe-in". This film explains how it can be rectified.
    They will also decrease your rims to make sure that all is clean.
    I appreciate that this can be very noisy if not resolved.
    Peter Lazarus UK Cycling Market Manager DECATHLON
  • Good but squeaky brakes

    Dan (United Kingdom)
    Used for More than 1 year
    The bike was great and all ready to go from the store however they told me after a day the brakes would stop squealing, after a month the breaks are still squealing. It wakes people up in my street in the morning that's how loud they are. Other than the brakes I can't fault anything on the bike
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