Surly Karate Monkey Frameset

Surly Karate Monkey Frameset
  • Color: Wet Clay
  • Color: Toxic Tangerine
Please select options


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

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 maniacal 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

WARNING: This product can expose you to chemicals, including lead, known to the state of California to cause cancer and birth defects or other reproductive harm. For more information, go to

WARNING: Cycling can be dangerous. Bicycles and bicycle products should be assembled and serviced by a professional mechanic. Never modify your bicycle or accessories. Read and follow all product instructions and warnings including information on the manufacturer’s website. Inspect your bicycle before every use. Always wear a helmet.


Frame 4130 Chromoly, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, ED coated
Fork 4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, ED coated
Headset 44mm
Axles Front: 110 x 15mm
Rear: 148 x 12mm
Bottom Bracket 73mm threaded (1.37" x 24TPI)
Fork Compatibility Rigid: 483 x 47mm
Suspension Fork: 551 x 51mm (27.5+ 140mm)
Wheel Compatibility 27.5 x 3.0
29 x 2.5"
Seat Post 30.9mm

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Wet Clay / X-Small 708752302327 FM2015 SUR46804557L
Wet Clay / Small 708752302341 FM2016 SUR45856612L
Wet Clay / Medium 708752302365 FM2017 SUR46982084M
Wet Clay / Large 708752302389 FM2018 SUR45297244E
Wet Clay / X-Large 708752302402 FM2019 SUR46894144E
Toxic Tangerine / X-Small 708752302426 FM2040 SUR5352998L
Toxic Tangerine / Small 708752302440 FM2041 SUR52182121L
Toxic Tangerine / Medium 708752302464 FM2042 SUR53552929M
Toxic Tangerine / Large 708752302488 FM2043 SUR52978071E
Toxic Tangerine / X-Large 708752302501 FM2044 SUR53356817E