Surly Karate Monkey Frameset


Surly Karate Monkey Frameset

Karate Monkey is a highly-versatile trail bike that plays the part of 29er and 27.5+ equally well.

SKU: 4923008XX22 Category: Tag:
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Surly Karate Monkey Frameset

Multipurpose Hardtail Mountain Bike

Karate Monkey delivers a resilient, lively ride on all sorts of gnarly terrain. Its frame is a highly-versatile canvas for whatever dirty masterpiece your brain cooks up. According to our computing machine (Thor) it can be set up in approximately 487 different configurations.

Originally designed as a 29er (and the frame that helped spark the 29” wheel movement), the latest Karate Monkey is designed to perform just as admirably as a 27.5+ rig as well. This allows you to pick your poison — provided your poison is having a really great time while permanently donning a shit-eating grin, of course.

  • Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles, suspension corrected fork
  • Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though)
  • Clearance for 29” x 2.5” or 27.5” x 3” tires
Frame Construction
4130 Chromoly, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, ED coated
Fork Construction
4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, ED coated
Rear Dropout Configuration
Horizontal slotted with optional vertical dumpout
Rear Hub Spacing
“Gnot-Boost” 145mm
12 x 142mm or 12 x 148mm (Surly axle included)
10 x 135mm with Surly 10/12 Adapter Washers (not included)
Front Hub Spacing
15 x 110mm (Surly axle included)
Rear Brake
Disc – 51mm I.S. (203mm max rotor)
Front Brake
Disc – 51mm I.S. (203mm max rotor)
Head Tube
Steerer Tube
Ø28.6mm (1-1/8″)
Crown Race
Ø30mm (1-1/8″)
Stock Headset Upper (S.H.I.S)
Stock Headset Lower (S.H.I.S)
Seat Collar
Front Derailleur (Clamp)
High direct mount top-pull (Ø34.9mm)
26mm offset adapter (not included) for 142 or 135mm rear hub spacing
29mm offset adapter (not included) for 148mm rear hub spacing
Max Chainring (CL) [3]
1x (Mtn):  28T
2x (Mtn):  24/34T
1x (Boost):  32T
2x (Boost):  24/36T
Bottom Bracket
73mm threaded (1.37″ x 24TPI)
Tire Clearance Frame [1]/[2]
27.5 x 3.0”
29 x 2.5″
Tire Clearance – Rigid Fork [1][5]
29 x 3.0”
Rigid Fork Spec
483 x 47mm
Max Suspension Fork Length [4]
551 x 51mm (27.5+ 140mm)
Bottle Mounts Frame
1 Standard + 1 Three-Pack (XS – M)
2 Standard + 1 Three-Pack (L – XL)
Bottle Mounts Fork
2 Three-Pack
Rack Mounts Frame
Yes (upper and lower threaded)
Rack Mounts Fork
Yes (upper, lower, and mid-blade threaded)
Fender Mounts Frame
Fender Mounts Fork
Other Features
Internal dropper post routing compatible

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Surly Bicycles

Surly steel bicycles

Offers range of bikes, from fat bikes to travel bikes and fixed gears. Unique tubing for each model and size. Shipping in Europe.
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Bicycle Size

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Wheel size

27.5'', 29''

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