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    Big Dummy Frameset2022 Surly
    Recommended
    MSRP
    $1,599
    Where to Buy
    —
    $1

    At

    Category
    		Long Tail Cargo
    Frame
    		Steel
    		Steel
    Wheels
    Wheel Size
    		29″
    		Avid Mechanical Disc
    		microSHIFT Advent
    Drivetrain
    		1 × 9
    Brand Site

    surlybikes.com

    Summary
    		The Surly Big Dummy Frameset is a 29″ steel frame long tail cargo frameset with 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)

    25 mph

    Big Dummy Frameset

    Highest gear

    (descending)

    Geometry
    Specs
    Big Dummy Frameset2022 Surly
    Frame

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

    BB Standard: BSA, Threaded

    Tire Clearance: 2.5"

    Color: Bruised Ego Purple

    Fork

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

    Bottom Bracket

    Race Face BSA 24

    Headset

    Cane Creek 40 Series

    Stem

    Kalloy 31.8

    Handlebar

    Surly Terminal Bar

    Saddle

    Selle Italia X-Base

    Seatpost

    Kalloy 27.2

    Type: Rigid

    Groupset
    Rear Derailleur

    microSHIFT Advent 1x9 Speed, RD-M6195M

    Front Derailleur

    N/A

    Crank

    Race Face, 32t

    Shifters

    microSHIFT Advent Trail 1x9 shifter, SL-M9195-R

    Cassette

    microSHIFT Advent 11-46t, 9-speed

    Chain

    KMC X10 10-Speed

    Brakes

    Avid BB7 S MTN

    Type: Avid Mechanical Disc

    Brake Levers

    Avid FR-5

    Wheels
    Spokes

    DT Swiss 2.0 Stainless

    Front Hub

    Novatec QR x 100, 36h

    Rear Hub

    Novatec QR x 135, 36h

    Tires

    Surly ExtraTerrestrial Tire - 26 x 2.5", Tubeless, Folding, Black/Slate, 60tpi

    Disc Rotors

    SRAM CenterLine 200/180mm

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