Rockrider 520 Mountain Bike

    € 310.80

    Designed for mountain bike touring. Have fun exploring new playgrounds.

    More details
    SKU: S120236 (1864810)
    Select a color:
      Select a size :
    Size Guide

    Delivery in 6 to 7 days

    Our e-commerce is suspended for a transition period. We expect to be back soon!
    Product benefits
    1. Cycling comfort
      Enjoy the raised position, adjustable stem, 80mm suspension, and hammock saddle.
    2. Efficiency
      Ride and explore with the 27.5" wheels, 24 speeds, and aluminium frame.
    3. Precision
      Precision
      Control your path with the double disc brakes and notched tyres.
    4. Ease of use
      Ease of use
      Use the wheel to adjust the stiffness of the fork based on your weight.
    5. Lifetime warranty
      Lifetime warranty
      B’Twin provides a lifetime warranty on the frame, stem and handlebar.
    Details
    • SIZE
      S/M/L/XL
    • WEIGHT
      14.45 kg in M without pedals
    • WHEEL SIZE
      27,5 inches
    • LIFE WARRANTY
      frame, handlebar, stem.
    • SUSPENSION
      80 mm suspension fork
    • COLOURS
      Grey / Yellow / Blue
    Product feature
    1. THE STORY OF THE ROCKRIDER 520 MOUNTAIN BIKE...
      Entirely designed and developed in France at the B'Twin Village (Lille), this mountain bike is the fruit of the work of an expert team of passionate mountain bikers. The Rockrider team designed and tested the Rockrider 520 mountain bike with their test riders.
    2. A UNISEX MOUNTAIN BIKE
      Men's or women's mountain bike? The Rockrider 520 mountain bike is unisex. For greater comfort, the women on our mountain bike team recommend replacing the saddle with the Women's 500 Sport saddle, which is adapted to women's bodies.
    3. HOW DO I CHOOSE MY MTB SIZE?
      Several sizes available: S: between 1.50m and 1.64m M: between 1.65m and 1.74m L: between 1.75m and 1.84m XL: between 1.85 m and 2.00 m If you are on the limit between 2 sizes: Choose the smaller size for easier steering (easier to handle) and comfort (straighter back). Choose the larger size for easier pedalling with a more stretched-out position (position more suited to performance).
    4. A FRAME THAT COMBINES THE JOY OF THE RIDE & THE PLEASURE OF STEERING
      For a lighter weight and more efficient pedalling, the Rockrider 520 frame has been designed with 6061 aluminium (only 1.9 kg in size M). The lower bottom bracket helps keep you more stable during turns.
    5. FRONT SUSPENSION TO CUSHION UNPREDICTABLE TERRAIN
      Calmly face new obstacles (roots, pebbles, stones, etc.) with the front fork with 80 mm of travel. Easy: use the wheel to adjust the stiffness of the fork based on your weight.
    6. REAR SUSPENSION: NONE
      This mountain bike has no rear suspension. This is a "semi-rigid" mountain bike. Compared to a full suspension mountain bike (with rear suspension), the advantages are clear: lighter weight, you will spend less energy on flat ground. However, if you want more comfort, the RR 520 also exists in a "full suspension" version with a rear shock absorber.
    7. DERAILLEUR & DRIVE TRAIN: REACH GREAT SPEEDS
      3 8-speed chainwheels, or a wide range of 24 speeds. 2 quick shifters on the handlebar. Left (chainrings): control ascents/descents. Right (speeds): more precise control over your pedalling. In detail: - Triple chainwheels - 22, 32 and 42 teeth - MICROSHIFT MS22 front derailleur - SRAM X3 rear derailleur - SRAM X4 shifters, with speed indicators - SRAM PG820 8 cog cassette, 11 to 32 teeth
    8. HANDLEBAR, STEM, GRIPS: TAKE CONTROL OF THE HANDLEBARS
      With its adjustable stem, the RR 520 controls are close at hand. The all-aluminium B'Twin stem is 70 mm (size S), 80 mm (size M/L), or 90 mm (size XL) and can be raised using 5 adjustment intervals: + 0 mm, + 7.5 mm, + 15 mm, + 22.5 mm, + 30 mm. In detail: - Aluminium "oversize" handlebars are 660 mm (size S and M) or 680 mm (for L and XL) wide - B'TWIN SPORT "soft touch" grips for a good grip and comfortable feel in your hands.
    9. SADDLE / SEAT POST: COMFORTABLE AND SPORTY SEAT
      Since your mountain bike rides will get longer and longer, it is important to have a suitable seat. So our teams have designed the exclusive B'Twin Ergofit Evo saddle. Suitable for all hip sizes, its "hammock" shape is particularly noticeable during sport touring. Along with the 27.2 mm diameter aluminium FLEX seat post, it guarantees greater comfort. Easily adjust the seat height using the quick release on the seat clamp.
    10. DOUBLE DISC BRAKES: GET A GRIP ON YOUR BRAKING
      No matter what conditions you ride in (dry/wet/mud), the HAYES MX5 front and rear mechanical disc brake calipers offer powerful, progressive braking. The TEKTRO aluminium brake levers are easy to grip, lightweight, and precise.
    11. DOUBLE-WALLED 27.5" WHEELS
      Have fun with the 27.5" double-walled aluminium Aero Trail Evo wheels. Their diameter is the perfect balance between comfort and performance. With their 28 spokes, they are lightweight, stiff, and durable.
    12. TYRES FOR DRY TERRAIN
      The exclusive 27.5" x 2.0 B'TWIN ALL TERRAIN DRY tyres are adapted to dry ground. Their side lugs provide good traction during turns. The central tread provides good performance and the side lugs offer traction during turns. Recommendations for pressure based on the cyclist's weight are marked on the sidewalls.
    13. PLATFORM PEDALS
      The RR 520 comes with MTB bearing-mounted platform pedals made of hard resin for light weight and safety. If your foot slips off the pedal, there's less risk of injury.
    14. EASILY TRANSPORT AND STORE YOUR MOUNTAIN BIKE
      Cycle touring does not start from home; that's why we have made it easier to remove and replace the front and rear wheels. They are equipped with a quick-release system.
    15. 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. The weight can vary based on the tolerance of the components. The bike comes with B'Twin platform pedals. The total weight (bike + rider) should not exceed 120 kg.
    16. Accessories
      Your RR520 mountain bike comes with a bell, lighting, wheel reflectors, and pedals. The frame is compatible with: - front and rear mudguards, - stand, - bottle cage, - saddle bag, - rear pannier rack, - child seat (add an additional pannier rack for sizes S and M to avoid touching the rear wheel) etc.
    17. OUR ADVICE FOR YOUR FIRST RIDE
      Tip No.1 When mountain biking, there is always the risk of a fall: don't forget to wear a helmet. Tip No.2 Even if the saddle is comfortable, cycling shorts with a pad (saddle-shaped foam) are a real plus for preventing glute pain. Tip No.3 If you don't want to stop to drink, bring water in a bottle or water bladder to access it while riding. Tip No.4 Punctures are always possible, remember to bring a repair kit.
    18. LEGAL NOTICES
      To find out more about usage and maintenance information of the SUNTOUR fork, go to the SUNTOUR website. You will be able to download the instructions manual for your composant from this website. http://www.srsuntour-cycling.com/service/download-area/consumer-downloads/bike/owners-manuals/general-fork-manual/
    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
      We recommend storing your mountain bike in a cool, dry place, away from corrosive products and salty air.
    4. Product restrictions
      Not suitable for All Mountain, Enduro, and 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
    4.2 / 5
    152 reviews
    152 users recommend this product
    Write a review
    • 27.5” Rockrider 520 Mountain Bike

      16/07/2018
      joseph albert (United Kingdom)
      Used for 2 to 8 weeks
      A really good bike, My 13 year old son loves it, It comes with lights so I only added a Bluetooth speedometer, mudguards a bottle holder, stand and a colour coded helmet and he was ready to go.
    • Brilliant staff helpful and polite

      15/07/2018
      Jeffrey (United Kingdom)
      Used for 2 to 8 weeks
      Great staff help me with all my questions and everything I needed to now polite and very knowledgeable
    • Value for money at the price point

      20/06/2018
      Alec (United Kingdom)
      Used for 1 week or less
      I spend most of my time looking for high end bikes for people including my self .I was looking for a bike to take my son to school and rides out with the kids after comparing slot of bikes at the price the rock rider was far ahead on value.after the first ride it done what it said gears brakes all worked better than I thought.only negative tyres but it's always a price cut .so if you want a bike that works and can get you on the trails for a budget look no further.
    • Not impressed

      18/06/2018
      Pascal (United Kingdom)
      Used for 2 to 8 weeks
      I have bought this bike after reading all the good reviews as my old bike needed replacing. I have only done a few rides with it since I got it a month ago. Some on smooth cycle paths and a couple off roads. It handles well and it is a comfortable enough ride BUT it keeps changing gears at the slightest bump. Even worse, after having done ~50-80 km, the chain broke! If I compare that to my old bike a cheap specialized which lasted me 15 years and would have lasted even longer had I not been knocked off it by a car : it never missed a gear, I never had to change anything other than the brakes, I am not too impressed by the b'twin rockrider. Will see what decathlon have to say about that but I am considering a refund rather than a fix after my experience so far.
      Response of the brand
      Hello,
      I'm sorry to read that the gearing was jumping on your new bike. I gather it was set up by a store, could you kindly reply to me with the name of your store please?
      A snapped chain is very rare but it may be because the gears were not shifting correctly and if changing gear under load, a chain can become damaged. Your local store will replace the chain for you if this was the case.
      Regards,
      Peter Lazarus, National Cycling Manager, DECATHLON
    • Good for price

      16/06/2018
      Callum (United Kingdom)
      Used for 2 to 8 weeks
      Good for price. Decent brakes, good rear gears and okay suspension. One drawback is the front deraileur, it rubs against the chain in high gears and sometimes doesn't change to 2nd. Another drawback is the fact that it is very unclear how to remove fork. There are spacers and i have seen pictures of them swapped around to change handlebar height. Can you change fork and if so how?
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