Cannondale Topstone Sora Bike - 2020

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Built for chasing horizons, exploring routes less traveled and accelerating your commute with the Cannondale Topstone Sora bike. This capable, versatile gravel bike was born to roll and roam.

  • Features

    • Shimano Sora 2 x 9 mechanical drivetrain is robust and reliable; mechanical disc brakes offer excellent, reliable stopping power in all conditions
    • SmartForm C2 Alloy construction and a full carbon fork deliver exceptionally light weight and a high-performance feel
    • A balanced riding position is upright enough for comfort over the long haul and control on technical terrain, yet still low and forward enough for speedy efficiency
    • Built with plenty of room for tires up to 42mm wide for comfort, grip and adventurous capability
    • Mounts for 3 water bottles, plus mounts for top tube storage; multiple bottle cage positions on the downtube mount let you configure for big frame bags
    • StraightShot internal cable routing; flat-mount disc
    • Pedals not included; specs and images are subject to change


    Free Adjustment Period:
    New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
    View all Cannondale Endurance Bikes
  • Technical Specs

    Best Use

    Road Cycling

    Bike Frame Material



    SmartForm C2 Alloy


    Full Carbon

    Bike Suspension

    No Suspension


    FSA Tempo Adventure, 46/30

    Bottom Bracket

    FSA Cartridge


    Shimano Sora, 2x9

    Front Derailleur

    Shimano Sora, 31.8 clamp

    Rear Derailleur

    Shimano Sora

    Rear Cogs

    Sunrace, 11-34, 9-speed

    Number of Gears

    18 gear(s)

    Brake Type

    Mechanical Disc Brake


    Promax Decoder R cable actuated disc, 160/160mm rotors

    Brake Levers

    Shimano Sora


    RD 2.0, 28h

    Front Hub

    Formula RX-512 12x100

    Rear Hub

    Formula RX-142 12x142

    Wheel Size



    WTB Riddler Comp, 700c x 37mm

    Tire Width

    37 millimeters

    Handlebar Shape

    Drop Bar


    Cannondale 3, butted 6061 Alloy, 16 deg flare drop


    Cannondale 4, 6061 Alloy, 31.8, 6°

    Seat Post

    Cannondale 4, 6061 Alloy, 27.2 x 400mm


    Cannondale Stage Ergo


    Not included


    Topstone Si, 1-1/8 in. to 1-1/4 in. taper, 25mm Alloy top cap


    KMC Z9, 9-speed


    22 lbs. 12.8 oz.

    Bike Weight

    Bike weight is based on median size, as sold, or the average of two median sizes.



  • Size Chart

    S M L XL
    Reach 37.7 38.5 39.4 40.2
    Stack 54.9 57.9 61.0 64.0
    Effective Top Tube 54.4 56.1 57.9 59.6
    Seat Tube Center-Top 45.8 50.5 55.3 60.0
    Standover Height 74.4 78.4 82.5 86.3
    Head Tube Length 11.8 14.9 18.2 21.4
    Head Tube Angle (degrees) 71° 71° 71° 71°
    Seat Tube Angle (degrees) 73.1° 73.1° 73.1° 73.1°
    Bottom Bracket Height 28.4 28.4 28.4 28.4
    Wheelbase 102.2 104.0 106.0 107.8
    Chainstay 43.0 43.0 43.0 43.0
    Fork Offset 5.5 5.5 5.5 5.5

    Sizing Notes

    Measurements are stated in centimeters unless otherwise indicated.

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