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    Big Dummy Frameset2025 Surly
    Recommended
    MSRP
    $1,599
    Where to Buy
    —
    $1

    At

    Category
    		Long Tail Cargo
    Frame
    		Steel
    		Steel
    Wheels
    Wheel Size
    		29″
    		Mechanical Disc
    Drivetrain
    Brand Site

    surlybikes.com

    Summary
    		The Surly Big Dummy Frameset is a 29″ steel frame long tail cargo frameset with mechanical disc brakes.

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    Insights
    Geometry
    Specs
    Big Dummy Frameset2025 Surly
    Frame

    100% Surly Chromoly steel, Natch tubing, double-butted main triangle, TIG welded

    BB Standard: BSA, 73mm, Threaded

    Fork

    100% Surly Chromoly steel, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated

    Bottom Bracket

    73mm BSA threaded (1.37" x 24TPI)

    Seatpost

    Ø30.9mm

    Type: Rigid

    Groupset
    Brakes

    51mm IS (160-203mm)

    Type: Mechanical Disc

    Wheels
    Tires

    26 x 2.3"

    Disc Rotors

    51mm IS (160-203mm)

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