Surly says.... 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 smirk of satisfaction, 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" tyres

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
Max. Suspension fork length: 551 x 51mm (27.5+ 140mm) (Suspension fork length listed at full extension not at sag)
Fork Length (axle to crown): 483mm
Fork Offset: 47mm
Rear Spacing: "Gnot-Boost" 145mm
Rear Axle: 12 x 142mm or 12 x 148mm (Surly axle included)
Brakes: 51mm I.S. (203mm max rotor)
Headset - Upper: ZS44/28.6
Headset - Lower: EC44/30
Front Axle: 15 x 110mm (Surly axle included)
Steerer Tube: Ø28.6mm (1-1/8")
Crown Race: Ø30mm (1-1/8")
Seatpost: Ø30.9mm
Dropper Post Compatible
Seatpost Clamp: Ø33.1mm
Front Derailleur Clamp: Ø34.9mm
Bottom Bracket: 73mm threaded (1.37" x 24TPI)
Crankset (Max Ring): 1x (Mtn): 28T / 2x (Mtn): 24/34T / 1x (Boost): 32T / 2x (Boost): 24/36T (Listed chainring clearance is worst-case scenario. Clearances vary widely depending on components and configurations.)
Bottle Mounts: 1 Standard + 1 Three-Pack (XS - M) / 2 Standard + 1 Three-Pack (L - XL)
Fork Mounts: 2 Three-Pack
Fender Mounts