Experience the ultimate ride on any terrain with the Surly Karate Monkey Bike. Its adaptable frame serves as your creative outlet, with over 487 variations available according to our advanced computing system (Thor). Originally envisioned as a 29er and a pioneer of the 29" wheel trend, the newest Karate Monkey can also excel as a 27.5+ setup. Choose your adventure and prepare to have a blast while grinning from ear to ear.