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

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.

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 the ultimate 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 compliant with the use of Dummy Rail Collars
Vertical, 135mm spaced dropouts with fender eyelets; Rohloff compliant
Clearance for 26" x 2.5" tires with fenders

Surly Big Dummy

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

Frame	Steel
Suspension	Rigid
Fork	Steel
Wheels	26″ Aluminum
Drivetrain	3 × 10
Groupset	GX, Deore
Brakes	Avid Mechanical Disc

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

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

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

2020 SurlyBig Dummy

2020 Surly
Big Dummy