Surly Karate Monkey - Deore/SLX Build

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  • Regular price £2,594.00
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Bath Outdoors Surly Karate Monkey - What we have to say:

We're long term fans of the Surly Karate Monkey. This is one of the most versatile steel hardtails out there and an iconic bike any cyclist would love to own. We have built this up as a rigid steel hardtail 27.5 plus tyre, Shimano 1x11 speed format. However, if you would like to modify the spec with a suspension fork, 29er wheels or anything else then please let us know and we can cost it up for you.

We have a couple of bikes built and ready to go in the shop, the remaining frames we have in stock are boxed up with build kits allocated to them allowing is to build and ship them in a couple of days.

We have used Shimano, Halo and Gusset components in the build as Shimano is built for UK riding, Halo Wheels roll like a dream but can take the hits with Gusset components adding style to the build. Halo and Gusset are also British companies which we're a fan of!

Any questions about this build? Feel free to email us or give us a call at the shop for more information or to chat through the build kit.

Please note: that we have used a stock photo for the Gold frame on the website. The Green and black frames in all of the photos are pictures of the actual build kits at the shop :).

This is what Surly have to say about the Karate Monkey:

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

Frameset & Build Kit:

Frame: 100% Surly Chromoly Steel
Custom double butted externally flaired tubing. Horizontal slotted with derailleur hanger, Surly “Gnot Boost”
142 or 148mm hub spacing compatibility
Fork: 100% Surly Chromoly Steel
483mm axle-to-crown x 47mm offset, 110mm hub spacing, tapered and butted straight blade. 51mm I.S. disc mount
Seatclamp: Surly Stainless Steel 33.1mm

Drivechain -
Crankset: Shimano Deore 5100 175mm
Bottom Bracket: Shimano BB52
Front Derailleur: N/A
Rear Derailleur: Shimano Deore 5100 11sp
Cassette: Sunrace 11t - 46t
Chain: KMC 11sp
Components -
Headset: Gusset ZS44/28.6 & EC44/40
Brakes: Shimano SLX 7100 2 pot
Brake Levers: Shimano SLX 7100
Rotors: Shimano Ice Tech 180mm Centre Lock
Shifters: Shimano Deore 5100 11sp
Stem: Gusset Staff Stem 80mm
Handlebar: Gusset Beard Bar 750mm/31.8mm
Grips: Gusset S2 Lock Ons
Saddle: Gusset R-Series Black Jack
Seatpost: Gusset Lofty
Wheels -
Front Wheel: Halo Vapour MTC 27.5" 110mm Boost
Rear Wheel: Halo Vapour MTC 27.5" 148mm Boost

Tyres: Schwalbe Nobby Nic 27.5 x 2.6



Reach 377 402 427 450 472
Stack 597 597 597 606 615
Head Tube Angle 69.0° 69.0° 69.0° 69.0° 69.0°
Head Tube Length 100 100 100 110 120
Seat Tube Length 330 368 419 470 521
BB Drop 55 55 55 55 55
Wheelbase 1053 1078 1103 1129 1155
Chainstay Length 423 423 423 423 423
Top Tube Length, Actual 549.7 560.4 575 597.5 624.5
Top Tube Length, Effective 560 585 610 635 660
Seat Tube Angle 73.0° 73.0° 73.0° 73.0° 73.0°
Standover Height 743 759 783 812 827
Stem Length 60 70 70 70 80
Stem Angle
Handlebar Width 750 750 800 800 800
Crank Length 170 170 175 175 175
Fork Length 483 483 483 483 483
Fork Rake 47 47 47 47 47