Surly

2018 Surly Big Dummy

Previous used estimate

$710 - $730

Actual value depends on condition, size, and local demand.

2018 Surly Big Dummy

Value Guide market data · 2018 Surly Big Dummy

12-month projected trend

5%

Direction and magnitude, not judgment

vs. category average

1%

Drops faster than category avg

Price over time - 2018 Surly Big Dummy

$2.1k$1.3k$461MSRPMSRPYr 1Yr 2Yr 3Yr 4Yr 5Yr 6Yr 7Yr 7Yr 8Yr 9Yr 10Yr 11Yr 12Yr 13Yr 14Yr 14Yr 15Yr 16Yr 17Yr 18Yr 19Yr 20Yr 20

Values based on actual sales data. Enter your bike's specifics to get a precise valuation.

All Big Dummy model years

Compare Big Dummy models

1 models

Choose a different build or frame style to see its value.

Overview

About this bike

Big Dummy is a long-tail cargo bike, which means that not only can you haul a serious amount of cargo, different accessories can be added to your Big Dummy frame and deck depending on what you want to carry. Being a dedicated single-piece frame, instead of an add-on to an existing bike, it's stiffer and resistant to torsional flex, which provides a better ride and longer lasting frame than long-tail add-ons. Like all Surly's frames, it's made of their size specific, 4130 CroMoly steel – a tube set engineered for cargo that sports lots of little touches that you've come to love in a Surly, like clearance for big tires and the use of common component sizes. Figure on being able to carry about 200 pounds (90kg) of cargo. The load weight, and how it's loaded, will affect the handling somewhat. Also, plan on using gears, especially as cargo weight increases. This may seem obvious, but as you get comfy with it, you will use your full range of gears as never before. The parts kit is good quality, and suitable to loaded as well as unloaded riding. It's got a 3x10 drivetrain, Avid BB7 disc brakes, quality Shimano Deore hubs, and 26x2.3to; Kenda Kiniption tires. They've outfitted it with Surly-designed bags, deck, rails and Dummy Rail Collars; everything you need for the majority of stuff you might carry, like groceries, shovels, bags of charcoal or mulch, guitars, lamps, mannequins, whatever. Bags, deck, rails, and rail collars are all designed to improve on previous offerings and work together to make sure your stuff is transported with safety and stability. It's an unbending interface, which when you're carrying lots of cargo, is a good thing to have. Get creative, and get hauling. If you intend to carry a passenger on your Big Dummy, Surly requires use of their Dummy Rail Collars. These provide a secondary retention system for the rack, as well as stiffen the rack system. These are included with current Big Dummy bikes and frames, as well as available for older Big Dummy bikes and frames (compatible with all generations of Big Dummy bikes/frames). In addition, a stoker handlebar set up, found on tandem bicycles, is recommended as well. Make sure to check with seat post manufacturer for stoker handlebar compatibility. If you are planning to carry a child on your Big Dummy, Surly recommends the use of a child seat. They've tested the Maxxi Yepp seat. Yepp makes an adaptor that allows their seat to mount onto Surly's deck. It works well with the Big Dummy. At this time other child seats are not recommended and will void your warranty. Surly is testing other options. For the most up to date compatibility/options, check http://www.surlybikes.com/safety Note: keep in mind Big Dummy weight limits when carrying a passenger.

Specifications

Category
Hybrid
Component Fork
Surly Big Dummy, TIG-welded 4130 CroMoly, tapered and butted straight bladewith single fender eyelet on the dropout, 1-1/8? x 260mm threadless steerer, 51mm IS disc mount, removable cantilever pivots, line/housing guides
Component Hubs
Shimano Deore M525 Disc, 36h
Component Rims
Alex Adventurer
Component Stem
H.L., 31.8mm
Product Family
Big Dummy
Component Chain
KMC X10
Component Frame
Surly Big Dummy, Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded cargo specific engineered for stiffness.
Component Tires
Kenda 26x2.3" Kiniption, 60tpi
Component Brakes
Avid BB7, Centerline 180mm rotors front & rear
Component Saddle
WTB Volt Sport
Component Headset
Cane Creek 40
Component Crankset
FC Firex C3.1
Component Shifters
X7 Trigger
Component Handlebar
Premetec
Component Seat Post
Kalloy SP-342
Component Brake Levers
Avid FR-5
Component Bottom Bracket
Surly Enduro
Component Rear Derailleur
SRAM GX, 10-speed TYPE 2.1
Component Front Derailleur
Shimano Deore, FD-T611-3
Hubs
Shimano Deore M525 Disc, 36h
Rims
Alex Adventurer
Tires
Kenda 26x2.3" Kiniption, 60tpi
Crankset
FC Firex C3.1
Bottom Bracket
Surly Enduro
Chain
KMC X10
Saddle
WTB Volt Sport
Handlebar
Premetec
Headset
Cane Creek 40
Front Derailleur
Shimano Deore, FD-T611-3
Rear Derailleur
SRAM GX, 10-speed TYPE 2.1
Stem
H.L., 31.8mm
Brake Levers
Avid FR-5
Brakes
Avid BB7, Centerline 180mm rotors front & rear
Fork
Surly Big Dummy, TIG-welded 4130 CroMoly, tapered and butted straight bladewith single fender eyelet on the dropout, 1-1/8? x 260mm threadless steerer, 51mm IS disc mount, removable cantilever pivots, line/housing guides
Frame
Surly Big Dummy, Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded cargo specific engineered for stiffness.
Seat Post
Kalloy SP-342
Shifters
X7 Trigger

What to check when buying used

Inspection

Frame condition

Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.

Inspection

Drivetrain wear

Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.

Inspection

Service history

Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.

Shop Our Inventory