Rockrider 340 Mountain Bike - Orange

€ 191.98

Designed for occasional mountain biking.

More details
SKU: S13558 (1819979)
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Product benefits
  1. Cycling comfort
    Raised position. Ergofit ergonomic saddle. 80 mm front suspension.
  2. Efficiency
    Aluminium frame. Shimano 21 speeds. Wide rims and tyres for faster terrain.
  3. Precision
    Double V-brakes: light and powerful. Tyres with good lateral grip.
  4. Ease of use
    Ease of use
    Grip shifters. Integrated chainring and derailleur guards.
  5. Lifetime warranty
    Lifetime warranty
    B'Twin provides a lifetime warranty on the frame, stem and handlebar.
  • Size
    S / M / L
    26 inches
  • Weight
    14.85 kg in M without pedals
  • Life warranty
    frame, stem and handlebar.
    80 mm suspension fork
Product feature
  1. Design
    The ROCKRIDER 340 was designed and created in France, at the B'Twin Village in Lille, by a team of experts and cycling enthusiasts dedicated to designing our mountain bike Sport Touring line. Production took place in different factories in Europe as close to our Decathlon stores as possible. More information available on our website:
  2. Frame
    Exclusive Rockrider 340 frame, with an upright position for multi-purpose use. Made from reinforced 6061-T4T6 aluminium that combines durability and low weight. "Sloped" unisex frame geometry is suitable for both men and women. Painted with 3 coats of paint and varnished designs for long-lasting protection.
  3. Front suspension
    Suntour XCT front suspension with 80 mm travel and stiffness adjustment dial. Or B'Twin U-Fit 80 fork, with 80 mm of travel and an innovative fork stiffness adjustment based on the rider's weight (55 to 105 kg). Both of these suspensions include a mechanical spring and elastomer stoppers for maximum reliability and minimum maintenance.
  4. Rear suspension
    No rear suspension.
  5. Drivetrain
    Triple-chainring steel chainset (22/32/42 teeth) with a plastic guard. Shimano Tourney TY500 7-speed rear derailleur. Shimano TZ30 or Microshift MS22 front derailleur. SRAM MRX21 speed grip shifters, with speed indicators. Shimano TZ21 cassette with 7 cogs, 14-28 teeth. KMC Z51 chain that's wider for more durability.
  6. Brakes
    V-brake front and rear brakes with a coil spring for more powerful braking. Aluminium mountain bike brake levers that require only 2 fingers to operate.
  7. Handlebar/stem/steering/grips
    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 100 grips have a soft-touch finish for better grip and extend the grip shifters.
  8. Wheels
    26" B'Twin Alloy Single Wall wheel. Wide wheel with 36 spokes for greater durability and shock resistance. Quick-release on the front wheel for easier maintenance, transport and storage. Lock nut on back wheel to reduce risk of theft.
  9. Tyres
    New B'Twin All Terrain Dry mountain bike 26" x 2.0 tyres known for their high performance (thanks to fast central tread) and good grip in the turns (thanks to side lugs).
  10. Saddle / seat post
    Exclusive B'Twin Ergofit saddle with a wider "hammock" shape that evenly distributes pressure, resulting in a more comfortable seat. Steel mountain bike seat post with a 29.8 mm diameter and 350 mm long.
  11. Pedals
    Bike comes with mountain bike platform pedals with bearings, made from hard resin for lower weight and greater safety (less aggressive in case of pedal that slips).
  12. Weight
    14.5 kg in size XS without pedals. 14.8 kg in size S without pedals. 14.85 kg in M without pedals. 15.0 kg in size L without pedals. 15.2 kg in size XL without pedals.
  13. Accessories
    Comes with a derailleur guard and chainring guard, bell, front and rear lights, and wheel and pedal reflectors. Frame compatible with a rear pannier rack, baby seat, stand, bottle holder, front and rear mudguards, saddlebag, etc.
  14. WEIGHT
    14.5 kg in size XS without pedals. 14.8 kg in size S without pedals. 14.85 kg in M without pedals.15.0 kg in size L without pedals. 15.2 kg in size XL without pedals.
    Your BMX RR340 comes with a derailleur guard, chainwheel protection (to prevent dirt getting onto your clothes), bells, lights, wheel reflectors and pedals. The frame is compatible with: - Front and rear mudguards - Stand - Bottle cage - Saddle bag - Rear pannier rack - Child seat etc.
    We recommend that beginners wear cycling shorts with a pad (foam in the shape of a saddle) or a gel saddle cover to reduce soreness. For longer rides, remember to take something to drink (e.g. a water bladder or bottle). In all circumstances, even for a short ride, wearing a helmet is essential!
Product testing
  1. Composition
    Frame : 100.0% Aluminium
  2. Storage advice
    Store in a cool, dry place, away from corrosive products and salty air.
  3. 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.
  4. Product restrictions
    Not suitable for XC, All Mountain, Enduro, BMX.
  5. Product catchline
    The N° 1 endurance mountain bike: comfy thanks to the upright position and front suspension, and effective thanks to its light aluminium frame and SHIMANO 21 speeds.
  6. 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
4.2 / 5
228 reviews
234 users recommend this product
Write a review
  • Rockrider 340

    Mariusz (United Kingdom)
    Used for 2 to 8 weeks
    Good basic bicycle, very well assembled. Mostly used as a commuter and leisure/recreational rides....
  • Great bike

    Nigel (United Kingdom)
    Used for 2 to 8 weeks
    This is a great "starter" bike for my step-son to use. It is well built, great to look at and exceptional value. He loves it.
  • Great buy

    Roger (United Kingdom)
    Used for 2 to 8 weeks
    I bought this for my 14 year old grandson to replace one he has outgrown. It was easy to put together - just the pedals to fit and handlebars to straighten. My grandson loves it! The gears are easy to use and the saddle height easy to adjust.
    The only slight problem is that the screw to adjust the forward/backward position of the saddle won't unlock - hence 4 stars instead of 5. Fortunately the position is ok for my grandson, though it would have been perfect slightly further forward.
  • Bike

    Luke (United Kingdom)
    Used for 2 to 8 weeks
    Great bike and good value for money just need a more comfortable seat but I think that’s a lot off bikes now days
  • I would avoid this bike.

    Muhammad (United Kingdom)
    Used for More than 1 year
    When i first got this bike i was amazed at the cheap price despite all the things you get. After a couple of months however the brakes started to squeal awfully apparently because of the painted rims. To make things worse the derailleur is bolted to the frame and not to a piece of metal like all other bikes. This wouldnt be a problem but my frame has cracked for some weird reason and has caused it to bend making the bike practically impossible to ride! Hopefully someone from Decathlon will see this review and would be able to help me as I am aware the frame is under warranty as my bike is only a year old.
    Response of the brand
    Dear Sir,
    If the frame is damaged, please contact your local Decathlon store workshop who will happily assist with all matters relating to warranty and repair.
    Peter Lazarus, National Cycling Manager, DECATHLON
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