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The Cannondale Bad Boy 4 bike is a smooth operator whether it's for your daily commutes or urban joyrides, thanks to a comfortable upright position, easy-shifting drivetrain and powerful disc brakes.

  • Features

    • 6061-aluminum frame, sophisticated alloy crafting techniques and stealth fighter-inspired tube shapes deliver lightweight performance and quick acceleration
    • Aggressive urban geometry and flat handlebar offer a responsive, stable ride without feeling twitchy
    • Luxe leather grips, high-visibility reflective paint and rack/fender-friendly design are ready for your daily commute
    • Shimano 3x8 drivetrain offers snappy shifts through 24 gears to quickly get you up hilly streets and swiftly cruising along bike lanes
    • Cannondale mechanical disc brakes make quick work of reducing speed, even in the rain
    • Specs 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 Hybrid Bikes
  • Technical Specs

    Best Use

    Urban Cycling

    Bike Frame Material



    6061 aluminum


    Lefty rigid


    Shimano M171, 48/38/28

    Bottom Bracket

    Tange Cartridge


    Shimano Acera M310 Rapidfire Plus

    Front Derailleur

    Shimano Altus, 34.9 clamp

    Rear Derailleur

    Shimano Acera

    Rear Cogs

    Sunrace CSM558, 11-32, 8-speed

    Number of Gears


    Brake Type

    Mechanical Disc Brake


    Cannondale mechanical disc

    Brake Levers

    Cannondale C4


    Cannondale C3 Bad Boy, double wall, 32-hole

    Front Hub

    Cannondale Urban, 32-hole

    Rear Hub

    Cannondale Urban, 32-hole

    Wheel Size

    27.5 inches


    Schwalbe Kojac Race Guard, 27.5 x 1.35

    Tire Width

    1.35 inches

    Handlebar Shape

    Flat Bar


    Cannondale C4, 6061 alloy, flat, 640mm


    Cannondale C4, 25.4, 6 deg.

    Seat Post

    Cannondale C4, alloy, 31.6x350mm


    Cannondale Bad Boy Urban


    Cannondale Urban 6point3 died


    Tange Si 1-1/8"


    KMC Z51, 8-speed


    25 lbs. 4.8 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
    Height Range 5'0"- 5'3" 5'6" - 5'9" 5'9" - 6'0" 6'0"- 6'3"
    Reach 38.6 40.9 42.3 44.6
    Stack 58.9 61.8 66 68.8
    Effective Top Tube 56 59.2 61.8 65
    Seat Tube Center-Top 45 49 52.5 55
    Standover Height 76.2 79.2 83.3 85.8
    Head Tube Length 16 16 18 18
    Head Tube Angle (degrees) 70 70 70 70
    Seat Tube Angle (degrees) 73.5 73.5 73.5 73.5
    Bottom Bracket Height 2.8 2.8 2.8 2.8
    Wheelbase 103.6 107 109.9 113.3
    Chainstay 43.5 43.5 43.5 43.5
    Fork Offset 2.2 2.2 2.2 2.2

    Sizing Notes

    Measurements are stated in centimeters.

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