Surly Big Dummy

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Take Your Longtail Bike Anywhere

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


Frame Surly Big Dummy, Surly 4130 Chromoly steel.
Fork Surly Troll, TIG-welded 4130 Chromoly
Seatpost Clamp Surly Stainless, 30mm Surly stainless, included


Headset Cane Creek 40
Brakes Avid BB7
Brake Levers Avid FR-5
Rotors SRAM Centerline 180/180mm
Shifters X5 Trigger
Stem 4 Bolt 31.8mm clamp
Handlebar Premetec
Grip/Tape Velo Non-Locking
Saddle WTB Volt Sport
Seatpost 2 -Bolt. 27.2mm


Crankset TruVativ 48/36/26
Bottom Bracket SRAM
Front Derailleur Shimano Deore, FD-T611-3
Rear Derailleur SRAM GX Type 2.1
Cog or cogset Microshift CS-H100 10 speed, 11-36t
Chain KMC X10


Front Hub Shimano Deore M525, 36h, QR
Rear Hub Shimano Deore M525, 36h, QR
Rims Alex Adventurer
Tires Schwalbe Big Apple 26" x 60mm