Surly Karate Monkey Frameset Black

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
New 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
30.9mm seat tube ID
Clearance for 29 x 2.55 or 27.5 x 3” tires