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If remote rides on country roads call your name, you need a bike that isn't scared of gravel. With the Co-op Cycles ADV 3.1 bike, you get beefy 650 tires, a durable steel frame, and rack mounts.

  • Features

    • Double-butted chromoly steel frame offers durability for the backcountry and the reliably smooth ride quality that steel is known for
    • Flared handlebar with bar-end shifters enhances downhill handling on rough terrain
    • Shimano Deore double crank powers the 20-speed drivetrain for versatile performance on any grade
    • TRP Spyre cable-actuated mechanical disc brakes supply excellent stopping power
    • Puncture-resistant 650b tires have a wide, stable contact patch for confidence on varied terrain
    • Low-rider fork mounts and rear braze-ons accept front and rear racks for light touring (racks sold separately); 3 water bottle mounts
    • Bicycle weight limit is 300 lbs. total, including rider + all gear carried on the bike and on the rider's body
    • Pedals sold separately; 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 Co-op Cycles Co-op Cycles
  • Technical Specs

    Best Use

    Bike Touring


    Bike Frame Material



    Double-butted chromoly steel



    Bike Suspension

    No Suspension


    Shimano Deore, 38/24

    Bottom Bracket

    Shimano Deore


    Microshift BS-M10 bar-end

    Front Derailleur

    Shimano Deore

    Rear Derailleur

    Shimano Deore Shadow Plus

    Rear Cogs

    Shimano HG50, 11-36, 10-speed

    Number of Gears

    20 gear(s)

    Brake Type

    Mechanical Disc Brake


    TRP Spyre mechanical disc

    Brake Levers



    WTB 650B

    Front Hub

    Shimano Deore

    Rear Hub

    Shimano Deore

    Wheel Size



    Donnelly X'Plor MSO, 650b x 50 with reflective sidewall

    Tire Width

    50 millimeters

    Handlebar Shape

    Drop Bar


    Co-op Cycles aluminum


    Co-op Cycles aluminum

    Seat Post

    Co-op Cycles aluminum


    WTB Pure V Race


    Sold separately




    Shimano HG-54


    27.4 pounds

    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
    Height Range 5'0"-5'3" 5'3"-5'6" 5'6"-5'9" 5'9"-6'0" 6'0"-6'3"
    Reach 367.5 371.1 377.0 380.0 387.0
    Stack 532.0 536.7 567.0 588.7 631.3
    Effective Top Tube 515.0 525.0 545.0 560.0 580.0
    Seat Tube Center-Top 390.0 430.0 470.0 510.0 550.0
    Standover Height 709.0 733.9 768.4 799.4 843.0
    Head Tube Angle (degrees) 70.0 70.0 71.0 71.0 71.0
    Seat Tube Angle (degrees) 74.5 74.0 73.5 73.0 73.0
    Wheelbase 1043.6 1049.0 1050.1 1060.6 1082.5
    Chainstay 445.0 445.0 445.0 445.0 445.0
    Fork Offset 55 55 50 50 50

    Sizing Notes

    All measurements are stated in millimeters or degrees unless otherwise indicated.

  • Reviews
    24 reviews with an average rating of 4.5 out of 5 stars

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