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Surly Big Dummy Frameset

Surly Big Dummy Frameset
  • Color: Bruised Ego Purple
Bruised Ego Purple
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This item is not permitted to be shipped, however it can be purchased online and picked up. Warehouse items will take several days to arrive at the store for pickup.


The Surly Big Dummy. Designed to transport a rider and up to 200 pounds of cargo, the Big Dummy retains an extremely smooth and maneuverable ride under the heaviest of burdens. Big Dummy bikes ship with a Dummy deck, rails, Dummy Rail Collars, bags, and kickstand.

- 100% Surly chromoly steel; fork is suspension corrected for 80mm
- Fender eyelets and Surly Trip Guides for continuous brake/shift housing or brake hydraulic lines
- Two standard bottle mounts and one 3-pack mount on Small frame; three standard bottle mounts and one 3-pack mount on Medium and Large; four 3-pack mounts on the fork
- Includes (2) Surly Dummy Rail Collars for a stiffer Dummy Rail/Frame interface
- Length of the frame requires 2 chains and tandem cables
- 26 x 2.5" maximum tire clearance; absolutely no limitation on chainring sizes
- Weight Limit: 400 lbs. combined rider & cargo

Geometry Chart:
Rider Height (mm) 1600–1778 1676–1829 1778–1956
Reach 409.9 431.1 447.2
Stack 571.1 599.3 627.4
Head Tube Angle 70.0° 70.0° 70.0°
Head Tube Length 150 180 210
Seat Tube Length 406 432 508
BB Drop 40 40 40
Wheelbase 1469 1500.4 1526.8
Chainstay Length 821 821 821
Top Tube Length, Effective 590 620 645
Seat Tube Angle 72.5° 72.5° 72.5°
Standover Height 725 773 823
BB Height 299 299 299
Stem Length 70 70 80
Stem Angle
Handlebar Width 718 735 735
Crank Length 170 175 175
Fork Length 417.8 417.8 417.8
Fork Rake 43 43 43

WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to


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

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Bruised Ego Purple / Medium 708752367296 FM0898 SUR55649178M