Bruised Ego Purple

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

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

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

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

Since its introduction in 2008, many a family have ditched one or both of their cars thanks to Big Dummy. We’ve also seen many entrepreneurs and small business owners minimize their carbon footprint and incorporate Big Dummy into their business model.
Big Dummy is a dependable grocery getter, the modern day mini-van, the company car, and a human-powered car replacement. It’s all those things and more in that there’s no limit to what it can haul — as long as it falls within the 400-pound weight limit.
Dedicated single-piece frame increases stiffness and decreases torsional flex
Human cargo compatible with the use of Dummy Rail Collars
Vertical, 135mm spaced dropouts with fender eyelets; Rohloff compatible
Clearance for 26" x 2.5" tires with fenders
400-lb. combined rider and cargo weight limit

Surly Big Dummy Frameset

A 29″ steel frame long tail cargo frameset with mid-range components and avid mechanical disc brakes.

Frame	Steel
Fork	Steel
Wheels	29″
Drivetrain	1 × 9
Groupset	microSHIFT Advent
Brakes	Avid Mechanical Disc

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 30.9 Type: Rigid

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

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

2023 SurlyBig Dummy Frameset

2023 Surly
Big Dummy Frameset