483mm axle-to-crown x 47mm offset, 110mm hub spacing, tapered and butted straight blade, 4130 CroMoly. 51mm I.S. disc mount

Horizontal slotted with derailleur hanger, Surly “Gnot Boost” 142 or 148mm hub spacing compatibility

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 tires now on the market, riders have begun to understand the effect that tire width has on overall wheel diameter, and with ample tire clearance, you can see the benefits of multiple wheel sizes all on one bike. 27+ tires 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 tires.
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 tires 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.

MSRP
Where to Buy	— $1 At
Category	Trail
	3.2
Frame	Steel
	Steel
Wheels	Aluminum
Wheel Size	27.5″
	SRAM Level Hydraulic Disc


	NX
Drivetrain	1 × 11
Brand Site
Summary	The Surly Karate Monkey 27.5+ is a 27.5″ steel frame rigid trail bike with upper mid-range components.

Frame	Horizontal slotted with derailleur hanger, Surly “Gnot Boost” 142 or 148mm hub spacing compatibility Tire Clearance: 3"
Fork	483mm axle-to-crown x 47mm offset, 110mm hub spacing, tapered and butted straight blade, 4130 CroMoly. 51mm I.S. disc mount
Bottom Bracket	73mm
Headset	Cane Creek
Stem	H.L. 4-bolt, 31.8mm
Handlebar	Answer Pro Taper
Saddle	WTB Volt Sport
Seatpost	H.L. 30.9mm Type: Rigid

Rear Derailleur	SRAM Nx
Front Derailleur	None
Crank	SRAM NX 30t
Shifters	SRAM Nx
Cassette	Sunrace 11/42
Chain	KMC X11-1
Brakes	SRAM Level Type: SRAM Level Hydraulic Disc
Brake Levers	SRAM Level

Rims	Alex MD40
Front Hub	Salsa 110mm, 15mm thru-axle, 32h
Rear Hub	Salsa 148mm, 12mm thru-axle, 32h
Tires	Surly Dirt Wizard 27 x 3, 60 tpi