Surly Karate Monkey Complete Hardtail Bike - Lemon Lime Soda (NX Eagle)


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 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)
  • Clearance for 29” x 2.5” 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, 12x142mm or 12x148mm (Surly axle included), 10x135mm with Surly 10/12 Adapter Washers (not included)
Front Hub Spacing: 15x110mm (Surly axle included)
Rear Brake: Disc - 51mm I.S. (203mm max rotor)
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-on
Bottom Bracket: 73mm threaded (1.37" x 24TPI)
Tire Clearance Frame: 27.5 x 3.0”, 29 x 2.5"
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
Internal dropper post routing compatible

Build Kit Includes
Fork: RockShox Sektor RL, 27.5 140mm travel
Brakes: SRAM Level
Brake levers: SRAM Level
Rotors: SRAM Centerline 180/160
Handlebar: Salsa Rustler 31.8
Shifters: SRAM NX Eagle
Saddle: WTB Volt Sport
Seatpost: TranzX SP15, dropper post 80mm travel on XS/SM 120mm travel on MD/LG/XL
Crankset: SRAM Descendant 32T
Bottom Bracket: SRAM Power Spline
Rear derailleur: SRAM NX
Cassette: SRAM Eagle 11-50t
Chain: SRAM NX Eagle
Rims: WTB ST i40 TCS
Tyres: Surly Dirt Wizard 27.5 x 3.0

Mfr Claimed Weight

Not sure which is the correct size for you? Need help planning your build? Contact us at for an obligation free consultation - we love talking bikes and are always happy to help.