Imagine if a martial arts master had primate dexterity and was made of steel. You've now conceptualized the Surly Karate Monkey. The Monkey Frameset lets you build your dream 29er, a bike that's supremely versatile, capable of running skinny tires or massive treads (up to 2.55-inches wide), a rigid or 80mm squishy fork, rear racks and disc brakes. And, while it can easily rock gears, it brings its A-Game to the singlespeed scene, too. Of course, the Monkey boasts Surly's fine butted chromoly tubing so you always enjoy a silky-smooth ride that's perfect for handling any terrain beneath your wheels, and there are short chainstays for a lively, fun ride you'll love.