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2025 Surly

Big Dummy

A 26″ steel frame long tail cargo bike with mid-range components and avid mechanical disc brakes.

Manufacturer Price

$2,449
FrameSteel
SuspensionRigid
ForkSteel
Wheels26″ Aluminum
Drivetrain1 × 9
GroupsetmicroSHIFT Advent
BrakesAvid Mechanical Disc
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Insights
Gearing

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)

23 mph

Big Dummy

25 mph

Similar Bikes

Highest gear

(descending)

Spec Level

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

Sizing
SM

5'2" – 5'10"

MD

5'5" – 6'1"

LG

5'10" – 6'6"

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Price History
Geometry
Specs
Build
Frame

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

BB StandardBSA, 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)

Headset

Cane Creek 40

Stem

Kalloy 31.8

Handlebar

Surly Terminal Bar

Saddle

Selle Italia X-Base

Seatpost

Ø30.9mm

TypeRigid

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

TypeAvid Mechanical Disc

Brake Levers

Avid FR-5

Wheels
Rims

OE, 38mm, 36h

Front Hub

Novatec QR x 100, 36h

Rear Hub

Novatec QR x 135, 36h

Tires

Front: Surly ExtraTerrestrial Tire - 26 x 2.5", Tubeless, Folding, Black/Slate, 60tpi (tubes installed), Rear: Surly ExtraTerrestrial Tire - 26 x 2.5", Tubeless, Folding, Black/Slate, 60tpi (tubes installed)

Disc Rotors

51mm IS (160-203mm)

Rider Notes
Riders Also Viewed

First added April 18

Last updated May 23