Cannondale Topstone Carbon Lefty 3 Bike - 2021

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The gravel bike to beat all gravel bikes, the comfortable, capable, dual-suspension Cannondale Topstone Carbon Lefty 3 thrives off road, on road, up and down hills, and out in the elements.

  • Features

    • Refined geometry and dialed endurance fit rider position deliver an experience that's stable, composed and comfortable without losing that spark
    • The dual-suspension Topstone's Kingpin rear suspension and Lefty Oliver suspension gravel fork absorb bumps and road vibration for comfort, control and pure gravel performance
    • Kingpin gives you up to 30mm of rear suspension (deflection at the seat and rear axle combined) using a thru-axle pivot in the seat to improve comfort, traction and control
    • Lefty Oliver suspension fork delivers up 30mm of bump-smoothing travel for comfort, control and an unwaveringly precise ride on both the smooth stuff and the rough stuff
    • Gravel-optimized Shimano GRX 600 shifter and GRX 800 Wide rear derailleur deliver smooth and stable 1 x 11-speed shifting across a wide range of gears
    • Shimano GRX 400 hydraulic disc brakes provide greater control and stopping power for confident mixed-terrain riding
    • Balanced riding position is upright enough for comfort over the long haul and control for technical off-road terrain, yet still low and forward enough for speedy efficiency
    • With Proportional Response, the suspension, frame stiffness and ride-feel are custom tuned by size for an ultrasmooth ride and confident traction for every rider
    • High-volume 650b x 47mm tires provide excellent off-road traction and run at low pressures for a smooth, comfortable ride even on rougher terrain
    • OutFront steering geometry keeps the steering light and agile, while positioning the wheel farther in front of the rider for stability and confidence on rougher stuff
    • Carry plenty of gear and water, thanks to a multiposition mount on the down tube, plus mounts on the top tube, on the seat tube and under the down tube
    • Fully fender ready, Topstone features a removable fender bridge on the rear stays that's there when you need it and gone when you don't
    • Speed Release thru axles offer the stiffness and solid feel of a thru axle with the easy use of a quick-release axle; compatible with most thru-axle wheelsets
    • With DirectLine cable routing, an internal tube guides cables and housing through the frame from entry to exit for headache-free service
    • Built to accept an internally routed 27.2mm dropper seatpost (not included)
    • An integrated wheel sensor delivers hyperaccurate speed, route and distance info, bike registration, service reminders and more—all through the free Cannondale app
    • 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.
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  • Technical Specs

    Best Use

    Road Cycling

    Bike Frame Material



    BallisTec carbon with Kingpin suspension


    Lefty Oliver with 30mm travel, 55mm offset, Chamber Damper w/ All-Over tune, ISO High-Ride air spring and tapered steerer

    Bike Suspension

    Full Suspension


    Cannondale 1 with 40T OPI SpideRing

    Bottom Bracket

    Cannondale BB30


    Shimano GRX 600, 11-speed

    Rear Derailleur

    Shimano GRX 800 Wide

    Rear Cogs

    11-42, 11-speed

    Number of Gears

    11 gear(s)

    Brake Type

    Hydraulic Disc Brake


    Shimano GRX 400 hydraulic disc, 160/160mm RT76 rotors

    Brake Levers

    Shimano GRX 600 hydraulic disc


    WTB ST i23 TCS, 28h, tubeless ready

    Front Hub

    Formula CDH-57, Lefty, 6-bolt

    Rear Hub

    Formula DHT-142 with 12x142 Speed Release

    Wheel Size



    WTB Byway TCS Light, 650b x 47mm, tubeless ready

    Tire Width

    47 millimeters

    Handlebar Shape

    Drop Bar


    Cannondale 3, butted 6061 alloy, 16 deg. flare drop


    Cannondale 2, 6061 Alloy, 31.8, 7 deg.

    Seat Post

    Cannondale 2, UD Carbon, 27.2 x 350mm


    Fabric Scoop Shallow Elite, cro-mo rails


    Not included


    1-1/8 to 1-1/2 in. tapered


    Shimano HG601, 11-speed


    23 lbs. 6.4 oz.

    Bike Weight

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



  • Size Chart

    XS S M L XL
    Reach 36.8 37.7 38.5 39.4 40.1
    Stack 51.8 55 57.9 61 64.1
    Effective Top Tube 52.5 54.4 56.1 57.9 59.6
    Seat Tube Center-Top 41 45.8 50.5 55.3 60
    Standover Height 71 75.6 79.8 83.8 88
    Head Tube Length 9.7 13.1 16.5 19.8 23.2
    Head Tube Angle (degrees) 70 71.2 71.2 71.2 71.2
    Seat Tube Angle (degrees) 73.1 73.1 73.1 73.1 73.1
    Bottom Bracket Height 26.8 27.3 27.6 27.6 27.8
    Wheelbase 99.9 101 103 104.9 106.8
    Chainstay 41.5 41.5 41.5 41.5 41.5
    Fork Offset 5.5 5.5 5.5 5.5 5.5

    Sizing Notes

    Measurements are stated in centimeters unless otherwise indicated.

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