Rockrider 520 Mountain Bike

    Designed for MTB touring.

    More details
    SKU: S120236 (2002104)
    Select a color:
      Select a size :
    Size Guide

    Delivery in 6 to 7 days

    € 312.00
    Characteristics Designed for MTB touring.
    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
      Fork and tyres can be easily adjusted to the rider's weight.
    5. Lifetime warranty
      Lifetime warranty
      B’Twin provides a lifetime warranty on the frame, stem and handlebar.
    • Size
      M / L
      27.5 inches
    • Weight
      15.2 kg in M without pedals
    • Life warranty
      frame, handlebar, stem.
      80 mm suspension fork
      Grey / Yellow / Blue
    Product feature
    1. 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.
    2. Fork
      Suntour XCT 80 fork with 80 mm travel and adjustable fork stiffness (+ / -).
    3. Suspension
      No rear suspension.
    4. Drivetrain
      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.
    5. 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.
    6. Handlebar
      B'Twin Sport handlebar made from aluminium for reduced weight. Available in 660 mm (size M) and 680 mm (size L): wider for extra stability. Oversize diameter for more stiffness.
    7. Stem
      Exclusive B'Twin Upside Down 0/30 aluminium stem (lower weight). Lengths: 70 mm (S), 80 mm (M and L), 90 mm (XL): shorter for more precise steering. Can be raised by up to 3 cm with 5 settings (+ 0 mm, + 7.5 mm, + 15 mm, + 22.5 mm and + 30 mm). Is 15% stiffer thanks to its width being increased by 48%, providing more precise steering.
    8. Steering
      Semi-integrated Aheadset offers improved watertightness, more precise steering, and an integrated look. B'Twin Sport 120 mm grips with grooves: genuine comfort while riding.
    9. Saddle
      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.
    10. Seat post
      B'Twin Sport seat post made from aluminium to reduce 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 wide adjustment range.
    11. 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.
    12. Tyres
      Exclusive B'Twin All Terrain Dry 27.5" x 2.0 tyres with a central tread optimised for good performance. Side lugs ensure good traction in turns. Comes with a table of recommended pressure settings depending on the user's weight.
    13. Pedals
      B'Twin Flat resin pedals.
    14. Accessories
      Mountain bike sold with a water bottle, bottle cage, hand pump, saddle bag, an extra inner tube and 3 tyre levers. This mountain bike can also be fitted with a pannier rack, mudguard, stand, etc.
    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 recommend that beginners wear cycling shorts with a protective pad and/or a gel saddle cover to reduce soreness.
    Product reviews
    4.1 / 5
    2189 reviews
    2189 users recommend this product
    Write a review
    • 2 in 24 hours

      Richard (United Kingdom)
      Used for 1 week or less
      I have gone through two in 24 hours !! Exactly as the title suggests...first one the chain locked up at i was sold a faulty gear cog on the bike and the second one i was offered for replacing the damage caused with the first one , straight away the cvhain breaks i nearly get run over ???!! Im so shocked and stunned by it all.
    • Quality mountain bike

      Nigel (United Kingdom)
      Used for 2 to 8 weeks
      I'm really pleased with my rockrider 520 mountain bike ,lovely to ride and build quality is top notch! Love it / and I'd like to thank Tony argent who works on the bikes at giltbrook decathlon for helping with excellent advice ,very happy.
    • Great 1st mountain bike

      andy (United Kingdom)
      Used for 2 to 8 weeks
      Bought this for my 14 yr old son.excellent build quality and facilities for the price. Much better than similar models from Halfords.
    • Disc rotor question

      vlad (United Kingdom)
      Used for 2 to 8 weeks
      whats the biggest rotor can i fit at the back?
    • Excellent value

      Mark (United Kingdom)
      Used for 1 week or less
      Great price for a really good bike. Very smooth ride and well put together
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