Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Surly
2021 Surly Karate Monkey
Previous used estimate
$807 - $830
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 Surly Karate Monkey
12-month projected trend
10%
Direction and magnitude, not judgment
vs. category average
1%
Drops faster than category avg
Price over time - 2021 Surly Karate Monkey
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Karate Monkey model years
2025$1,389 - $1,429▲ 72% vs. 2021
2023$1,257 - $1,294▲ 56% vs. 20212021$807 - $830Currently viewing
2020$661 - $680▼ 18% vs. 2021
2019$604 - $622▼ 25% vs. 2021
2015$582 - $599▼ 28% vs. 2021
2014$365 - $376▼ 55% vs. 2021
2013$365 - $375▼ 55% vs. 2021
2012$361 - $372▼ 55% vs. 2021
2011$346 - $356▼ 57% vs. 2021
2010$354 - $365▼ 56% vs. 2021Compare Karate Monkey models
2 modelsChoose a different build or frame style to see its value.
Overview
About this bike
The Karate Monkey features updated, progressive trail geometry, our custom trumpet tubeset, and Surly's Gnot-Boost rear dropout system. Available in a variety of colors, with multiple drivetrain and wheel size configurations. - 100% Surly Chromoly steel frame and fork; double-butted main triangle and 44mm headtube - The tubeset uses the same trumpet tubes found on Instigator 2.0 frame - Adjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142, 148 12mm thru, as well as 135mm w/ 10/12 washer - Internal dropper seatpost routing with 30.9mm seat tube ID - Clearance for 29 x 2.55" or 27.5 x 3" tires
Specifications
- Subtype
- Cross Country
- Category
- Mountain
- Component Fork
- 100% Surly Chromoly Steel, 483mm axle-to-crown x 47mm offset, 110mm hub spacing, tapered and butted straight blade. 51mm I.S. disc mount
- Component Hubs
- Front: 110mm, Novatec, 32h, Thru-Axle Rear: 148mm, Novatec, 32h, Thru-Axle
- Component Rims
- WTB ST i40 TCS
- Component Size
- X-Small, Small, Medium, Large, X-Large
- Component Stem
- Promax 31.8
- Product Family
- Karate Monkey
- Component Chain
- KMC X12, NP/BK
- Component Color
- Fool's Gold
- Component Frame
- 100% Surly Chromoly Steel, Custom double-butted, externally flared tubing, Horizontal slotted with derailleur hanger, Surly “Gnot Boost” 142 or 148mm hub spacing compatibility
- Component Tires
- Surly Dirt Wizard 27 x 3", 60 tpi, Tubeless Ready
- Component Brakes
- Tektro HD-M275
- Component Pedals
- Sold separately
- Component Rotors
- Tektro 180/160mm
- Component Saddle
- WTB Volt 142
- Component Headset
- Cane Creek 15
- Component Crankset
- Shimano Deore FC-MT510-1, 30t
- Component Seatpost
- Promax 30.9
- Component Shifters
- Shimano Deore SL-M6100
- Component Handlebars
- Salsa Rustler without logo
- Component Tape Grips
- Velo - lock on
- Component Brake Levers
- Tektro HD-M275
- Component Bottom Bracket
- Shimano, included with crankset
- Component Rear Derailleur
- Shimano Deore RD-M6100, 12-speed
- Component Cassette Freewheel
- SunRace CSMZ800, 11-51t, 12-Speed
- Hubs
- Front: 110mm, Novatec, 32h, Thru-Axle Rear: 148mm, Novatec, 32h, Thru-Axle
- Rims
- WTB ST i40 TCS
- Tires
- Surly Dirt Wizard 27 x 3", 60 tpi, Tubeless Ready
- Crankset
- Shimano Deore FC-MT510-1, 30t
- Pedals
- Sold separately
- Bottom Bracket
- Shimano, included with crankset
- Chain
- KMC X12, NP/BK
- Seatpost
- Promax 30.9
- Saddle
- WTB Volt 142
- Headset
- Cane Creek 15
- Rear Derailleur
- Shimano Deore RD-M6100, 12-speed
- Stem
- Promax 31.8
- Brake Levers
- Tektro HD-M275
- Brakes
- Tektro HD-M275
- Fork
- 100% Surly Chromoly Steel, 483mm axle-to-crown x 47mm offset, 110mm hub spacing, tapered and butted straight blade. 51mm I.S. disc mount
- Frame
- 100% Surly Chromoly Steel, Custom double-butted, externally flared tubing, Horizontal slotted with derailleur hanger, Surly “Gnot Boost” 142 or 148mm hub spacing compatibility
- Handlebars
- Salsa Rustler without logo
- Shifters
- Shimano Deore SL-M6100
- Tape/Grips
- Velo - lock on
- Color
- Fool's Gold
- Size
- X-Large
- Cassette/Freewheel
- SunRace CSMZ800, 11-51t, 12-Speed
- Rotors
- Tektro 180/160mm
What to check when buying used
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.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.