The Surly Karate Monkey Bike is the ultimate multipurpose hardtail mountain bike. No terrain is too gnarly for its resilient and lively ride. With its highly-versatile frame, the possibilities are endless for creating your own dirty masterpiece. Our computing machine (Thor) has determined that it can be configured in approximately 487 different ways. Originally designed as a 29er, it has sparked the 29” wheel movement and now also performs exceptionally well as a 27.5+ rig. So go ahead and pick your poison - as long as your poison is guaranteed to put a smile on your face!