The Karate Monkey is a cross country ripper witha reputation as a solid foundation for any kind ofoff-road adventure. Karate Monkey is made fromSurly's size-specific, custom-drawn 4130 -Natchtubeset for a lively and tuned ride that will provideendless amounts of dirt-ripping fun. Get after it.HIGHLIGHTS- Surly 4130 CroMoly Steel 'Natch tubing- Fits 27.5 x 3" or 29 x 2.5" tyres- 51mm I.S. disc brake mounts- Dual water bottle- Surly Trip Guide full line guides for brake- One set of fender mounts on frame and fork- Gnot-Boost rear spacing is compatible with 12x142 or12x148 Boostâ¢