Surly Karate Monkey 27.5+ Fools gold Medium


“The KM is the most fun bike Ive ever ridden” (Tom) 

Available on back-order


We Say –

Equally at home loaded, tearing down that dreamy decent, or shredding at your local trail centre, the Surly Karate Monkey is a mean machine. This years Fools gold is a paint job you won’t forget, prospecting your next bikepacking adventure. 

“The KM is the most fun bike I’ve ever ridden” (Tom) 


They say-

Years ago the Karate Monkey helped start the 29” wheel movement and, as time’s gone by, many companies ­– Surly included – have experimented with even more wheel sizes.

With so many different types and sizes of tyres now on the market, riders have begun to understand the effect that tyre width has on overall wheel diameter, and with ample tyre clearance, you can see the benefits of multiple wheel sizes all on one bike. 27+ tyres have the same rolling diameter as a 29” wheel, yet you get all the traction and floatation benefits of extra-wide knobbies. And that’s just the tyres.

The Karate Monkey frame has recently gotten a make over that includes the addition of features like internal dropper post routing, a new tubeset that uses the same trumpet tubes found on our Instigator 2.0, and a slight tweak in geometry that is more progressive and trail-oriented. The Karate Monkey uses a horizontal dropout with a derailleur hanger that features Gnot-Boost spacing, which gives the rider the ability to run any kind of mountain bike hub they choose. 10 x 135mm QR, 12 x 142, or 12 x 148 Boost™ will all work in the Karate Monkey frame. The frame uses a 44mm headtube for broad fork compatibility and is ED coated for an added layer of internal protection. If, at any point, you decide you want to throw on some skinny meats, standard 29” wheels and tyres can be swapped in with no issue. If you want to round-house kick some trail right in the face, the Karate Monkey is your sled.

Please note:  Surly Karate Monkey Bikes are UK specc’d by Ison and will differ from the complete bikes as shown on the US Surly site


  • HandlebarGusset Slade No Rise
  • StemGusset Staff
  • GripsGusset S2 grips
  • SaddleGenetic STV
  • SeatpostGusset Lofty
  • Rear DerailleurSRAM GX
  • Gear LeversSRAM GX
  • ChainSRAM PC-1130
  • CranksetSRAM NX 32T
  • CassetteSRAM GX 11-42t
  • Bottom BracketSRAM GXP
  • BrakesSRAM Level TR
  • WheelsHalo Vapour 35 27.5
  • TyresSchwalbe Nobby Nic 2.8 Addix
  • ColourFool’s Gold



Additional information

Frame size


The Woods Cyclery, at 56 High St, Lyndhurst, SO43 7BG 02380 282028 [email protected]

Forest Leisure Cycling Burley Limited (company number 07192169)