Enter the Dojo Of Simian Martial Arts

The Surly Karate Monkey 27.5″+ frameset is the foundation of a highly-versatile trail bike that also plays the part of 29er equally well.

This frame 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.

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 big ‘ol grin, of course.

Features:

• 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

Specs:

• 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 Brake: Disc – 51mm I.S. (203mm max rotor)
• Front Brake: Disc – 51mm I.S. (203mm max rotor)
• Head Tube: ∅44mm
• Steerer Tube: ∅28.6mm (1-1/8″)
• Crown Race: ∅30mm (1-1/8″)
• Stock Headset Upper (S.H.I.S): ZS44/28.6
• Stock Headset Lower (S.H.I.S): EC44/30
• Seat Collar: ∅33.1mm
• Seatpost: ∅30.9mm
• Front Derailleur (Clamp): High direct mount top-pull (ÃÆ’Æ‘ËÅ”34.9mm), 26mm offset adapter (not included) for 142 or 135mm rear hub spacing, 29mm offset adapter (not included) for 148mm rear hub spacing
• 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″ / 29 x 2.5″
• Tire Clearance – Rigid 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
• Internal dropper post routing compatible