Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Surly
2023 Surly Big Dummy
Value Guide market data · 2023 Surly Big Dummy
12-month trend
10%
Direction and magnitude, not judgment
vs. category average
4%
Drops faster than category avg
Price over time - 2023 Surly Big Dummy
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Big Dummy model years
2023$2,278 - $2,645Currently viewing
2019$2,000 - $2,322▼ 12% vs. 20232018$1,952 - $2,267▼ 14% vs. 2023
2017$1,952 - $2,267▼ 14% vs. 2023
2016$1,952 - $2,267▼ 14% vs. 2023
2015$1,859 - $2,159▼ 18% vs. 20232014$1,859 - $2,159▼ 18% vs. 20232013$1,859 - $2,159▼ 18% vs. 2023
2012$1,846 - $2,144▼ 19% vs. 2023
2011$1,711 - $1,987▼ 25% vs. 2023
2010$2,279 - $2,6460% vs. 20232009$2,279 - $2,6460% vs. 20232023 Big Dummy lineup
Overview
About this bike
2023 Surly Big Dummy value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- 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
- Frame Construction
- 100% Surly Chromoly steel, Natch tubing, double-butted main triangle, TIG welded
- Fork Construction
- 100% Surly Chromoly steel, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated
- Rear Dropout Configuration
- Vertical
- Rigid Fork Spec
- 420 x 43mm
- Bottle Mounts Frame
- Small: Two Standard, One 3-packMedium and Large: Three Standard; One 3-Pack
- Bottle Mounts Fork
- Four 3-Pack
- Rack Mounts Frame
- Yes (Surly Dummy Rails)
- Rack Mounts Fork
- Yes (upper, lower, and mid-blade threaded)
- Fender Mounts Frame
- Yes
- Fender Mounts Fork
- Yes
Drivetrain
- Groupset
- Shimano Deore
- Rear Derailleur
- microSHIFT Advent 1x9 Speed, RD-M6195M
- Cassette
- microSHIFT Advent 11-46t, 9-speed
- Chain
- KMC X10 10-Speed
- Crankset
- Race Face, 32t
- Bottom Bracket
- Race Face BSA 24 / 73mm BSA threaded (1.37" x 24TPI)
- Shifter
- microSHIFT Advent Trail 1x9 shifter, SL-M9195-R
- Front Derailleur (Clamp)
- High direct-mount top-pull (Ø34.9mm)
- Max Chainring (CL)[3]
- No frame limitations
- Shifters
- microSHIFT Advent Trail 1x9 shifter, SL-M9195-R
Brakes
- Brake Levers
- Avid FR-5
- Rotors
- SRAM CenterLine 200/180mm
- Brake Caliper
- Avid BB7 S MTN
- Rear Brake
- 51mm IS (160-203mm)
- Front Brake
- 51mm IS (160-203mm)
- Brakes
- Avid BB7 S MTN
Cockpit
- Headset
- Cane Creek 40 Series
- Stem
- Kalloy 31.8
- Handlebar
- Surly Terminal Bar
- Seatpost
- Kalloy 30.9 / Ø30.9mm
- Saddle
- Selle Italia X-Base
- Grips/Bar Tape
- Velo Black
- Stock Headset Upper (S.H.I.S.)
- EC34
- Stock Headset Lower (S.H.I.S.)
- EC34
- Dropper Compatible (Routing)
- Yes, internal
- Grips
- Velo Black
Wheels & Tires
- Front Hub
- Novatec QR x 100, 36h
- Rear Hub
- Novatec QR x 135, 36h
- Spokes
- DT Swiss 2.0 Stainless
- Rims
- OE, 38mm, 36h
- Tires
- Surly ExtraTerrestrial Tire - 26 x 2.5", Tubeless, Folding, Black/Slate, 60tpi
- Steerer Tube
- Ø28.6mm (1-1/8")
- Design Wheel/Tire Sizes
- 26 x 2.3"
- Tire Clearance Frame[1]/[2]
- 26 x 2.5" (w/ or w/o fenders)
- Tire Clearance Fork[1]
- 26 x 3.0" (w/o fenders)26 x 2.8" (w/ fenders)
- Alternate Wheel-Tire Sizes
- 27.5 x 1.5-2.0" w/ or w/o fenders700c x 28-32mm w/ or w/o fenders
- Front Hub Spacing
- 10 x 100mm
- Axles
- Front: QR x 100mm, Rear: QR x 135mm
- Front Tire
- Surly ExtraTerrestrial Tire - 26 x 2.5, Tubeless, Folding, Black/Slate, 60tpi
- Hubs
- Front: Novatec QR x 100, 36h, Rear: Novatec QR x 135, 36h
- Rear Tire
- Surly ExtraTerrestrial Tire - 26 x 2.5, Tubeless, Folding, Black/Slate, 60tpi
Pedals
- Pedals
- Sold separately
Accessories
- units:
- inChoose InchesmmChoose Millimeters
- inChoose Inches
- mmChoose Millimeters
- Crown Race
- Ø30mm (1-1/8")
- Seat Collar
- Ø33.1mm
- Max Post Insertion
- Small: 375mmMedium: 255mmLarge: 331mm
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.