Velopedia Bicycle Archive

Surly Karate Monkey - Organic Eggplant

Original specifications: 27.5" wheels · geometry for 5 published sizes.

Share owner experience

Selling this bike? Get the spec link and selling options

At a glance

Model year
Not published by manufacturer
Category
Mountain
Original MSRP
$1,849.00
Sizes
XS, S, M, L, XL
Colors
Organic Eggplant
Geometry
5 manufacturer sizes
In this record
21 specifications · 8 archived images · original MSRP · geometry
Archive ID
900000889
Original buildSteel · 27.5"

Manufacturer catalog

Published sizes and colors

5 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

XSSMLXL

Published colors

Organic Eggplant

Frameset

Frame ConstructionSurly Karate Monkey - 4130 Chromoly, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, ED coated
Frame MaterialSteel
ForkSurly Karate Monkey - 4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, ED coated
Fork MaterialSteel

Drivetrain

ShiftersShimano Deore 12-spd
Rear DerailleurShimano Deore 6100 SGS
CranksetShimano Deore MT510, 30t
Bottom BracketShimano
CassetteOE 12-spd, 11-51t
ChainKMC X12 Anti-Rust

Brakes

BrakesBrake Calipers: SRAM Avid BB5 Mechanical; Brake Levers: SRAM Avid FR5; Rotors: SRAM 180/160, 6-Bolt

Cockpit & Contact Points

HeadsetCane Creek
HandlebarSalsa Rustler
StemKalloy 31.8
SaddleSelle Italia
SeatpostKalloy 30.9

Wheels & Tires

Hubs(F) Novatec 15x110mm, 32h / (R) Novatec 12x148mm, 32h
RimsWTB ST I40 TCS 2.0 27.5"
Front TireSurly Dirt Wizard 27.5 x 3.0", 60 tpi, Tubeless Ready
Rear TireSurly Dirt Wizard 27.5 x 3.0", 60 tpi, Tubeless Ready
Wheel Size27.5"

Geometry

5 sizes · 16 measurements

Frame measurements by size.

All geometry measurements5 sizes · 16 measurements
MeasurementX-SmallSmallMediumLargeX-Large
Seat tube330 mm368 mm419 mm470 mm521 mm
Effective top tube560 mm585 mm610 mm635 mm660 mm
Head tube100 mm100 mm100 mm110 mm120 mm
Head-tube angle69°69°69°69°69°
Seat-tube angle73°73°73°73°73°
Chainstay / rear center423 mm423 mm423 mm423 mm423 mm
Wheelbase1053 mm1078 mm1103 mm1129 mm1155 mm
Bottom-bracket drop55 mm55 mm55 mm55 mm55 mm
Reach377 mm402 mm427 mm450 mm472 mm
Stack597 mm597 mm597 mm606 mm615 mm
Standover height743 mm759 mm783 mm812 mm827 mm
Fork offset / rake47 mm47 mm47 mm47 mm47 mm
Fork length / axle-to-crown483 mm483 mm483 mm483 mm483 mm
Crank length170 mm170 mm175 mm175 mm175 mm
Stem length60 mm70 mm70 mm70 mm80 mm
Handlebar width750 mm750 mm800 mm800 mm800 mm

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

All published sizes30T · 11–51T · 12-speed
Lowest0.59:1 Highest2.73:1 Total range464%
Estimated speed At 90 RPM Lowest gear4.6 mph Highest gear21.2 mph

Rear tire: 27.5×3.

How it works

Ratio = chainring teeth ÷ rear sprocket teeth. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Bike-specific inspection checklist 20 checks based on 5 archived component groups Open checklistClose checklist
0 of 20 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: Surly Karate Monkey - Organic Eggplant · Mountain · Published sizes: XS, S, M, L, XL

Archived: Frame: Surly Karate Monkey - 4130 Chromoly, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, ED coated · Fork: Surly Karate Monkey - 4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, ED coated · Steel

Archived: Shifters: Shimano Deore 12-spd · Rear derailleur: Shimano Deore 6100 SGS · Crankset: Shimano Deore MT510, 30t · Bottom bracket: Shimano · Cassette: OE 12-spd, 11-51t · Chain: KMC X12 Anti-Rust

Archived: Brakes: Brake Calipers: SRAM Avid BB5 Mechanical; Brake Levers: SRAM Avid FR5; Rotors: SRAM 180/160, 6-Bolt

Archived: Wheel size: 27.5" · Rims: WTB ST i40 TCS 2.0 27.5" · Hubs: (F) Novatec 15x110mm, 32h / (R) Novatec 12x148mm, 32h · Front tire: Surly Dirt Wizard 27.5 x 3.0", 60 tpi, Tubeless Ready · Rear tire: Surly Dirt Wizard 27.5 x 3.0", 60 tpi, Tubeless Ready

Controls and contact points

Archived: Headset: Cane Creek · Handlebar: Salsa Rustler · Stem: Kalloy 31.8 · Seatpost: Kalloy 30.9 · Saddle: Selle Italia

Before and during the test ride

Follow the full used-bike inspection order →

My Garage

Velopedia

Enter your email and Velopedia will send a private sign-in link. No password required.

Have you owned this bike?Help preserve its real-world history by sharing your owner experience.

Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.

Add fit, maintenance and buyer detailsOptional · five additional fields

Your contribution goes directly to Velopedia’s private review queue. We’ll email an optional confirmation link plus a private edit and withdrawal link, but you do not need to confirm your email before an administrator can review or approve the submission.

Already contributed? Send me a fresh private edit link

For privacy, Velopedia shows the same confirmation whether or not an experience exists.

Gallery8 images

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

Scroll to Top