Karate Monkey Frameset

The Karate Monkey features updated, progressive trail geometry, our custom trumpet tubeset and Surly’s Gnot-Boost rear dropout system. Available in a variety of colors, with multiple drivetrain and wheel size 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)

Details
Clearance for 29” x 2.55” 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/Front Brake: Disc - 51mm I.S. (203mm max rotor)

Head Tube: Ø44mm

Steerer Tube: Ø28.6mm (1-1/8")

Crown Race: Ø30mm (1-1/8")

Stock Headset Upper (S.H.I.S): ZS44/28.6

Stock Headset Lower (S.H.I.S): EC44/30

Seat Collar: Ø33.1mm

Seatpost: Ø30.9mm

Front Derailleur (Clamp): High direct mount top-pull (Ø34.9mm)

Max Chainring (CL): 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: 27.5 x 3.0” or 29 x 2.55"

Tire Clearance Fork: 29 x 3.0”

Rigid Fork Spec: 483 x 47mm

Max Suspension Fork Length: 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: Yes

Other Features: Internal dropper post routing compatible