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    Big Dummy2020 Surly
    Recommended
    MSRP
    $2,150
    Where to Buy
    —
    $1

    At

    Category
    		Long Tail Cargo
    4.1
    Frame
    		Steel
    		Steel
    Wheels
    		Aluminum
    Wheel Size
    		26″
    		Avid Mechanical Disc
    		GX, Deore
    Drivetrain
    		3 × 10
    Brand Site
    Summary
    		The Surly Big Dummy is a 26″ steel frame long tail cargo bike with upper mid-range components and avid mechanical disc brakes.

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    Insights
    Gear Range

    A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

    Lowest gear

    (climbing)

    34 mph

    Big Dummy

    Highest gear

    (descending)

    Spec Level

    Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

    Geometry
    Specs
    Big Dummy2020 Surly
    Frame

    Surly Big Dummy, Surly 4130 Chromoly steel. Surly Big Dummy, Surly 4130 Chromoly steel. Main triangle double-butted. TIG-welded cargo specific engineered for stiffness.

    Tire Clearance: 2.5"

    Fork

    Surly Troll, TIG-welded 4130 Chromoly, Surly Troll 420mm axle-to-crown x 43mm offset, tapered and butted straight blade, 4130 Chromoly. 51mm I.S. disc mount

    Bottom Bracket

    SRAM

    Headset

    Cane Creek 40

    Stem

    4 Bolt 31.8mm clamp

    Handlebar

    Premetec

    Saddle

    WTB Volt Sport

    Seatpost

    2 -Bolt. 27.2mm

    Type: Rigid

    Groupset
    Rear Derailleur

    SRAM GX Type 2.1

    Front Derailleur

    Shimano Deore, FD-T611-3

    Crank

    TruVativ 48/36/26

    Shifters

    X5 Trigger

    Cassette

    Microshift CS-H100 10 speed, 11-36t

    Chain

    KMC X10

    Brakes

    Avid BB7

    Type: Avid Mechanical Disc

    Brake Levers

    Avid FR-5

    Wheels
    Rims

    Alex Adventurer

    Front Hub

    Shimano Deore M525, 36h, QR

    Rear Hub

    Shimano Deore M525, 36h, QR

    Tires

    Schwalbe Big Apple 26" x 60mm

    Disc Rotors

    SRAM Centerline 180/180mm

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