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    Ultra 520 AF GF Road Bike

    € 1,558.80

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

    More details
    SKU: S158932 (2245208)
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    Size Guide

    Available online

    Delivery in 6 to 7 days

    Our e-commerce is suspended for a transition period. We expect to be back soon!
    Product benefits
    1. Efficiency
      SRAM Rival groupset, Mavic Ksyrium wheels.
    2. Cycling comfort
      New B'Twin Evo Endurance 6061 aluminium frame. Fizik Antares endurance saddle.
    3. Precision
      Precision
      SRAM Rival hydraulic disc brakes.
    4. Lifetime warranty
      Lifetime warranty
      B'Twin offers a lifetime warranty for the aluminium frame on this bike
    Details
    • Sizes
      XS / S / M / L / XL
    • Weight
      kg
    Product feature
    1. Frame
      Our new B'Twin Ultra frame is derived from the Evo Endurance concept. It has a special geometry for increased comfort on long sports rides. 6061 aluminium with variable thickness for increased weight. External cables for easier bike care and maintenance. UCI-approved frame. 12 x 142 through-axle for more stiffness. Press fit 86 bottom bracket. "Flat mount" callipers for better integration with the frame. DI2 compatible. Weight: 1470g in size
    2. Fork / suspension
      Our new B'Twin Ultra Evo Endurance fork. Exclusively mounted on the B'Twin Ultra Evo Endurance frame. Carbon monocoque disc fork (flat mount calliper). 1'1/8 conical steerer tube; 1'1/2. 12 x 100 through-axle for more stiffness. Weight: 430g in size M
    3. Handlebar / stem / steering
      Deda RHM02 handlebar (Rapid Hand Movement) End-end width: XS / S: 400mm. M / L: 420mm. XL: 440mm. Diameter / width: 31.8mm. Drop: 130mm. Reach: 75mm. Weight: 295g. Deda Zero 2 stem Length: XS: 80mm. S: 90mm. M: 100mm. L: 110mm. XL: 120mm. Angle: 7° Height: 38mm Steerer tube diameter: 1"1/8 Material: 6061 aluminium Weight: 140g (in 110mm) Comfy gel handlebar tape for more comfort.
    4. Drivetrain
      SRAM Rival 22 drivetrain. SRAM Rival double front derailleur with Yaw system (79 grammes). SRAM Rival medium cage rear derailleur (191 grammes) SRAM Rival compact chainset.
    5. Crankset / cassette
      SRAM Rival compact 50/34 chainset Crank length varies according to size of bike. XS / S: 170mm. M: 172.5mm. L / XL: 175mm. SRAM PG-1130 cassette: 11-speed 11/28. (11/12/13/14/15/17/19/21/23/25/28).
    6. Brakes
      SRAM Rival Hydraulic brakes. Individual lever adjustment made possible by the "Reach Adjust" technology. Fluid used: DOT 5.1. Front pistons: 18mm; rear: 18mm. 6-hole 160mm front disc and 140mm rear. Weight: 493g per wheel (lever, calliper, hose and 160mm rotor).
    7. Wheels
      MAVIC Ksyrium disc. ISM welded rims. 17c internal rim width for low rolling resistance and increased comfort with 25mm tyres. 24 spokes at the front and rear for perfect braking 6 holes or Center Lock. Weight: 1890g (pair without tyres)
    8. Tyres
      Mavic Yksion tyres. 120 tpi nylon carcass. Nylon protection for puncture protection. Simple Compound highly grippy rubber. Max. pressure: 7.7 bar /110 psi.Weight: 245g.
    9. Saddle / Seat post
      New Fizik Antares R 3 Endurance saddle (wider for comfort and efficiency). - Composite thermoplastic, carbon and kevlar shell - Kium hollow alloy rails - Microtex and black, non-slip Microtex cover - Dimensions: 274x152mm - Weight: 205g Carbon performance seat post. 27.2mm diameter for greater comfort Length: XS: 250 mm S: 300 mm M,L: 350 mm XL: 400 mm
    10. Pedals
      Platform pedals.
    11. Accessories / equipment
      Comes with a lighting kit and bell.
    12. Weight
      8.5kg 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 clean and lubricate your drivetrain. We recommend using our B'Twin All-in-One bike care product. Be sure to take your bike to the after-sales department at your local Decathlon store for the free safety check offered on all new bikes.
    4. Product restrictions
      Cannot take a pannier rack.
    5. Product catchline
      Created for endurance, the geometry of the AFGF frame is the most comfortable in the range. Over long distances you'll love it for its raised position and the comfort of its disc brakes.
    Product reviews
    5 / 5
    1 review
    1 user recommend this product
    Write a review
    • A joy to ride

      30/01/2018
      Katherine (United Kingdom)
      Used for 1 week or less
      I am so impressed with this bike, excellent all-round ride, a total joy to pedal. It is my first bike with disc brakes, they are very powerful, progressive with good modulation. But what has impressed and surprised me most is ride quality, which is simply superb. It is my first aluminium frame - I have 2 carbon fibre, 1 titanium and 3 steel frame bikes - and I was concerned from reading reviews in the past that an aluminium frame would be harsh and uncomfortable. Nothing could be further from the truth. Aluminium frame design/technology has obviously come a long way - it is the equal of my other bikes. The other thing that has impressed me is the overall specification. All the components are good, there is nothing crying out to be upgraded. Only 2 rides so far but I am so pleased I just had to post a review.