Surly Karate Monkey Frameset

Surly Karate Monkey Frameset
  • Color: Blue Porta Potty
  • Color: Blue Porta Potty
  • Color: Hi-Viz Black
  • Color: Hi-Viz Black
Please select options


The Karate Monkey frame features updated, progressive trail geometry, a new tubeset, and Surly’s Gnot-Boost rear dropout system to support multiple drivetrain and wheel size configurations.

- 100% Surly 4130 chromoly steel frame and fork; double-butted main triangle and 44mm headtube
- Tubeset uses the same trumpet tubes found on Instigator 2.0 frame
- Adjustable rear dropouts with 145mm Gnot-Boost spacing works with 142 x 12, 148 x 12mm, and 135mm w/ 10/12 washer
- Internal dropper seatpost routing
- 30.9mm seat tube ID
- Clearance for 29 x 2.55 or 27.5 x 3 tires

Part Numbers

Option UPC MPN Store SKU
Blue Porta Potty / X-Small 708752240162 FM0310 SUR45707091Y
Blue Porta Potty / Small 708752240186 FM0311 SUR44524280Y
Hi-Viz Black / X-Small 708752240261 FM0315 SUR41295960K
Hi-Viz Black / Small 708752240285 FM0316 SUR4089776K
Hi-Viz Black / Medium 708752240308 FM0317 SUR41735137K
Hi-Viz Black / Large 708752240322 FM0318 SUR4063831K
Hi-Viz Black / X-Large 708752240346 FM0319 SUR41746866K