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    Ultra 900 Aluminium Frame Road Bike - Black/Grey/Yellow

    € 958.80

    Designed for frequent training and sport cycling / racing (any gradient, any distance).

    More details
    SKU: S170333 (2160363)
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    Size Guide

    Available online

    Delivery in 7 to 8 days

    Our e-commerce is suspended for a transition period. We expect to be back soon!
    Product benefits
    1. Efficiency
      Shimano 105 11-speed drive train. New Mavic Aksium 17c wheels.
    2. Cycling comfort
      B'Twin Ultra Evo Vario aluminium frame, carbon fork, aluminium steerer tube.
    3. Precision
      Precision
      Carbon fork. Shimano 105 direct mount front brakes.
    4. Lifetime warranty
      Lifetime warranty
      B'Twin provides a lifetime warranty on the frame, stem and handlebar.
    Details
    • SIZES
      XS / S / M / L / XL
    • WEIGHT
      8.9 kg
    Product feature
    1. Frame
      Our new B'TWIN ULTRA frame is derived from the Evo Vario concept. Aluminium is an ideal choice for obtaining an excellent propulsion-to-comfort ratio. The variable thickness tubes considerably reduce the weight. The cables are built into the frame. This frame is UCI-approved. Weight: 1400 g in size M.
    2. Fork / suspension
      The B'Twin Ultra Evo Vario fork is used exclusively on the B'Twin Ultra Evo Vario frame. The combination of carbon and aluminium is the ideal choice for perfect synergy between the B'Twin Ultra Evo Vario frame and fork. Brake located as close as possible to the fork. Weight: 550 g.
    3. Handlebar / stem / steering
      Compact B'Twin 6061-T6 aluminium handlebar is scaled to the bike's size. The handlebar weighs 320 g in size 420 mm. End-end width: XS, S 400 mm. M, L 420 mm. XL 440 mm. 6061 T6 aluminium stem. 140 g in size 110 mm. XS 80 mm. S, M 100 mm. L 110 mm. XL 130 mm. The headset uses long-lasting sealed bearings and has a 1-1/8" diameter at the top and 1-1/4" diameter at the bottom.
    4. Drivetrain
      Shimano 105 11-speed drive train. Shimano 105 SS double front derailleur. Shimano 105 11-speed rear derailleur. Shimano 105 double compact chainset.
    5. Crankset / cassette
      Shimano 105 52 x 36 chainset. Crank length varies according to size of bike: XS / S: 170 mm. M: 172.5 mm. L / XL: 175 mm. Shimano 105 11S 11 x 28. (11/12/13/14/15/17/19/21/23/25/28).
    6. Brakes
      Shimano 105 Direct Mount brakes on the fork: their dual-pivot technology offers precision and power. Stays perfectly centred thanks to DPB technology. Brakes made from cast aluminium and covered with powder paint that withstands frequent washing.
    7. Wheels
      New Mavic Aksium 17c wheels. Wider rim so you can use wider, more comfortable tyres. Height: 21 mm. ETRTO dimension: 622 x 17c. Pair, without tyres: 1880 g.
    8. Tyres
      MAVIC YKSION tyre ensures a good connection with the AKSIUM 17c rim. 700 x 25.
    9. Saddle / Seat post
      B'TWIN Comp Ergo Chromo saddle: chosen for its comfort and efficiency. Weight: 257 g. B'TWIN Competition aluminium seat post. Diameter: 31.6 mm. Length: 350mm. Weight: 240 g.
    10. Pedals
      Pedals not included.
    11. Accessories / equipment
      Comes with a front and rear-lighting kit and bell.
    12. Weight
      8.900 kg in size M, without pedals.
    Product testing
    1. Composition
      Frame : 100.0% Aluminium 6061
    2. Storage advice
      Store your bike in a dry, cool place. If riding or storing your bike in a salty environment, be sure to wash your bike after each use.
    3. Cleaning advice
      Regularly maintain your fork (clean and grease dampers), especially in winter. Take your bike to your Decathlon store's customer service workshop, which offers a free safety inspection on all new bikes purchased.
    4. Product restrictions
      Cannot take a pannier rack.
    5. Product catchline
      Bike designed for performance and endurance. Take part in all competitions with the UCI-approved frame. The top-of-the-line components enhance the Ultra's performance.
    Product reviews
    4.8 / 5
    30 reviews
    30 users recommend this product
    Write a review
    • Fast and light (for an Alu frame)

      05/08/2018
      Craig (United Kingdom)
      Used for 2 to 8 weeks
      Very pleased with the 900AF package. The tyres provided are like butter to anything sharper than a marble though. Puncture on third ride. :(
    • Great service - great bike

      03/08/2018
      Kasier (United Kingdom)
      Used for 2 to 8 weeks
      Bought this bike as a "winter bike" , but was amazed at how good the spec was for such a good price.

      Been out on it a few times and it feels pretty nippy but also feels pretty strong and durable, perfect for terrible winter conditions, potholes and the like. The handlebars are reassuringly wide and beefy so you can get a good grip when your hands are on the bars.

      Plenty of room for mudguards' lights etc, and the wheels (with bladed spokes) feel good too.

      I swapped the tyres first tho - from (bad) previous experience the tyres that come with the wheels are as useful as a chocolate teacup.

      Overall a great bike with great spec, and is easy on the eye.
    • Ultra 900

      01/08/2018
      Stuart (United Kingdom)
      Used for 2 to 8 weeks
      After a lot of consideration I purchased a b twin ultra 900. I have had it for 2 weeeks and I cannot fault it. Definitely recommend. Great service and a lovely bike.
    • Great bike

      23/07/2018
      Liam (United Kingdom)
      Used for 2 to 8 weeks
      I bought this as my first road bike. I don't have anything to compare it to but I'm very happy with it. I've had it just over a week and have covered about 70 miles. The bike was very easy to get used to. I've tried it out on flats a took it up into the Pennines at the weekend. Great for getting up hills.
      My only complaint would be that when my bike was put together the peddles were put on too tightly and now I can't get them off to change them. I'm going to have to take it back to the store which is a bit of a pain. Nothing wrong with the quality of the bike though.
    • ultra 900 af

      04/07/2018
      steve (United Kingdom)
      Used for 2 to 8 weeks
      bought this as a second bike for an upcoming trip to flanders, it is £200 plus cheaper than similar specced bikes but by no means feels cheap, the frame feels stiff and responsive with no notable unwanted flex and i have been pleasantly surprised by the ride comfort from what is clearly a well designed frameset. The mavic wheels and 105 groupset work as expected from these tried and tested components, well done decathlon for putting together a great bike at a great price
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