The Karate Monkey 27.5 features updated, progressive trail geometry, our custom trumpet tubeset and Surly’s Gnot-Boost rear dropout system.

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..

HIGHLIGHTS:

• 100% Surly Chromoly steel frame and fork; double-butted main triangle and 44mm headtube
• The tubeset uses the same trumpet tubes found on Instigator 2.0 frame
• Adjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142, 148 12mm thru, as well as 135mm w/ 10/12 washer
• Internal dropper seatpost routing with 30.9mm seat tube ID
• Clearance for 29 x 2.55 or 27.5 x 3 tires

SPECIFICATIONS:

• Frame: 100% Surly Chromoly Steel, Natch tubing, double-butted main triangle, TIG welded, E.D. coated
• Fork: Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated
• Headset: Cane Creek
• Handlebar: Salsa Rustler
• Stem: Kalloy 31,8mm
• Seatpost: Kalloy 30,9mm
• Seat: Selle Italia
• Wheels/Rims: WTB ST i40 TCS 2.0
• Front hub: Novatec 15x110, 32h, 6-bolt
• Rear hub: Novatec 12x148, 32h, 6-bolt
• Tires: Surly Dirt Wizard 27.5 x 3", 60tpi, Tubeless Ready
• Brakes: SRAM Avid BB5 Mechanical
• Rotors: 180mm foran, 160mm bak
• Crank:: Shimano Deore MT510, 30T
• Bottom Bracket: Shimano
• Front derrailleur: N/A
• Rear Derrailleur: Shimano Deore 6100 SGS
• Shifter: Shimano Deore 12-spd
• Cassette: 12-spd, 11-51t
• Chain: KMC X12 Anti Rust
• Weight: N/A