Rockrider 520 Mountain Bike

    Designed for regular, moderate intensity mountain bikers looking for thrills!

    More details
    SKU: S120236 (1864812)
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      Select a size :
    Size Guide

    Delivery in 3 to 4 days

    € 319.80
    Characteristics Designed for regular, moderate intensity mountain bikers looking for thrills!
    Product Benefits
    1. Cycling comfort
      Raised position. Ergonomic saddle. Height-adjustable stem. Soft-touch grips.
    2. Efficiency
      CGF Evo aluminium frame. 24-speed SRAM X3. Light 27.5" Aero Trail Evo wheels.
    3. Precision
      Double disc brakes. Easy-to-handle geometry. Tyres have good grip in turns.
    4. Ease of use
      Ease of use
      Innovative fork with easy adjustment based on rider's weight.
    5. Lifetime warranty
      Lifetime warranty
      B’Twin provides a lifetime warranty on the frame, stem and handlebar.
    • SIZE
    • WEIGHT
      14.45 kg in M (no pedals)
      27.5 inches
    • Life warranty
      frame, handlebar, stem.
      80 mm suspension fork
      Grey / Yellow / Blue
    Product feature
    1. Design
      The ROCKRIDER 520 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
      Rockrider CGF Evo (Comfort Geometry Frame) 6061 aluminium frame for 27.5" wheels. Comfortable seating position thanks to raised steering. Seat is 5 times more flexible than a standard frame thanks to a narrow 27.2 mm seat post. Low bottom bracket: helps keep the mountain bike stable in turns, and makes it easier to place foot on the ground. Open steering angle (69.5°): keeps mountain bike stable while riding. Short rear wheel base: bike is easy to turn.
    3. Front suspension
      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). Durable thanks to the materials and fabrication processes used. Equipped with a mechanical spring and elastomer stoppers for maximum reliability and minimum maintenance.
    4. Rear suspension
      No rear suspension.
    5. Drive train
      SRAM S200 triple-chainring chainset (22/32/42 teeth). SRAM X3 8-speed rear derailleur. Microshift MS22 front derailleur. SRAM X4 shifters with speed indicators. SRAM PG820 cassette, 8 cogs, 11 to 32 teeth.
    6. Brakes
      TEKTRO aluminium brake levers: lightweight and precise. Front and rear Hayes MX5 mechanical disc brake callipers: powerful, progressive braking, even in rainy and muddy conditions.
    7. Handlebar / stem / steering / grips
      B'Twin Sport Oversize aluminium handlebar; 660 mm (size S and M), and 680 mm (L and XL). Exclusive B'Twin aluminium stem, 70 mm (size S), 80 mm (sizes M/L), and 90 mm (size XL). Stem can be raised by up to 3 cm, with 5 settings (+ 0 mm, + 7.5 mm, + 15 mm, +22.5 mm, +30 mm). Semi-integrated A-headset headset—better sealed and integrated style. B'Twin Sport handles with grooves, 120 mm long: genuine comfort while riding.
    8. Wheels
      Aero Trail Evo wheels with double-walled rims: lightweight, stiff, and durable. 27.5" diameter: the best balance of comfort and performance. Designed with 28 spokes to reduce weight while still guaranteeing rigidity and strength.
    9. Tyres
      Exclusive B'Twin All Terrain Dry 27.5" x 2.0 tyres with a central tread specially designed for fast performance. Side lugs provide traction in turns. Also includes a chart showing recommended pressure levels depending on the rider's weight (see markings on tyre sidewalls).
    10. Saddle / seat post
      Exclusive B'Twin Ergofit Evo saddle offers outstanding comfort thanks to its wider "hammock" shape and good distribution of pressure points regardless of the rider's pelvis width. B'Twin Sport seat post in aluminium for less weight. 27.2 mm diameter provides the seat with a natural flex that's 5 times greater than a classic seat post. 400 mm long, offering a broad adjustment range.
    11. Pedals
      Bike comes with MTB platform pedals with bearings, made from hard resin for lower weight and greater safety (less aggressive in case of pedal that slips).
    12. Weight
      14.35 kg in S without pedals. 14.45 kg in M without pedals. 14.55 kg in L without pedals. 14.70 kg in XL without pedals.
    13. Accessories
      Frame can take a bottle cage, saddle bag, mud guard, stand, pannier rack.
    14. Sizes
      S: 1.50m to 1.65m M: 1.65m to 1.75m L: 1.75m to 1.85m XL: 1.85m to 2.00m
    15. Weight
      15.2 kg in size M without pedals, including accessories.
    16. Electric assistance
      No electric assistance.
    Product testing
    1. Composition
      Frame : 100.0% Aluminium 6061
    2. Approved by
      The Mission Test test users in the Lyon mountains, in May 2015.
    3. Storage advice
      Store in a cool, dry place, away from corrosive products and salty air.
    4. Product restrictions
      Not suitable for All Mountain, Enduro, BMX
    5. Product catchline
      The Rockrider 520 equipped with 6 accessories essential to mountain biking; what you need to stay hydrated and perform minor repairs.
    6. Lab tested
      We also recommend that beginners wear cycling shorts with a protective pad and/or a gel saddle cover to reduce soreness.
    Product reviews
    4.1 / 5
    1274 reviews
    1274 users recommend this product
    Write a review
    • Tina Hurrell

      Tina (United Kingdom)
      Used for 1 week or less
      Brought this bike for my husband and he absolutely loves it. Delivery was fast. Couldn't be happier with my purchase.
    • Great bike

      Stephen (United Kingdom)
      Used for 2 to 8 weeks
      Lovely to ride bike easy to work!
    • Provider mountain bike

      tessa (United Kingdom)
      Used for 2 to 8 weeks
      My 15 year old son saved his money and bought this bike himself and wasn't disappointed.Cheaper than some mountain bikes he'd seen but the quality was better.He's quite tall so the large frame was perfect for him and the adjustable handle bars are particularly good.He finds the bike comfortable to ride, even off road!
    • Nice bike

      Anthony (United Kingdom)
      Used for 3 to 6 months
      Nice bike, so far reliable
    • Good but not perfect

      James (United Kingdom)
      Used for 3 to 6 months
      Good spec bike for the price though some early issues with chain (broke) and gears needing constant adjustment. Unfortunately nearest decathlon is two and a half hours away, so unable to fix it there.
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