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Surly Karate Monkey 27.5+

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What it’s built for:

The Karate Monkey is Surly’s dedicated mountain bike, built to tackle the nastiest terrain you can throw at a steel hardtail. Originally conceived as a 29er (in fact it was one of the bikes that helped kickoff the 29” revolution way back when), these days it’s been updated for modern riding and comes built with ultra-grippy 27.5+ tires to keep you comfortable and ripping no matter what the trail sends your way. But it’s no one trick pony, the Karate Monkey comes with plenty of braze-ons to get outfitted for your next dirt-centric bikepacking escapade.


Why we love it:

This is a mountain bike done the Surly way. First and foremost it’s rugged, sensible, and wildly capable, but it’s also extraordinarily versatile. While Surly tends to steer clear or fickle things like suspension forks and dropper seatposts that many manufacturers chase, they go for quality where it counts like with their cush-riding mid-fat tyres, and refined geometry. The Monkey’s equally up for your next big bikepack as it is for a day up at Makara Peak.


  • Frame Horizontal slotted with derailleur hanger, Surly “Gnot Boost” 142 or 148mm hub spacing compatibility
  • Fork 483mm axle-to-crown x 47mm offset, 110mm hub spacing, tapered and butted straight blade, 4130 CroMoly. 51mm I.S. disc mount
  • Seatpost clamp Surly stainless, 33.1mm
  • Crankset SRAM NX 30t
  • Bottom Bracket SRAM Powerspline
  • Front derailleur None
  • Rear derailleur SRAM Nx
  • Cog or cogset Sunrace 11/42
  • Chain KMC X11-1
  • headset Cane Creek
  • Brakes Level
  • Brake levers SRAM Level
  • Shifters SRAM Nx
  • Stem H.L. 4-bolt, 31.8mm
  • Handlebar Answer Pro Taper
  • Saddle WTB Volt Sport
  • Seatpost H.L. 30.9mm
  • Wheels
  • Front hub Salsa 110mm, 15mm thru-axle, 32h
  • Rear hub Salsa 148mm, 12mm thru-axle, 32h
  • Rims Alex MD40
  • Tires Surly Dirt Wizard 27 x 3, 60 tpi



Though we’re a bike shop that sells, builds and fixes bicycles, they’re really just the means to an end; albeit a beautifully designed means to an idyllic end. Our job most importantly is to encourage as many people as we can to get out and ride for transport and enjoyment. We'd love to make riding a bike as commonplace as your morning cup of coffee, which by the way is our other obsession.

Bicycle Junction is situated at 1 Marion St, Te Aro, Wellington.