Surly's Pugsley takes the term "all terrain bicycle" to a new, fantastically fun level. The Pugsley was created to go where normal mountain bikes flounder with nearly 4-inch-wide tires on 26-inch wheels. The flotation and traction gained by using large volume, low-pressure tires can get you over and through otherwise unrideable terrain: ice, snow, sand, mud, wet rocks and roots. The drivetrain is ready for anything, too, with Shimano Deore/SLX derailleurs and a burly Truvativ Hussefelt crankset. And to help you master the most adverse conditions, you get tough Salsa and WTB components as well as Avid BB7 mechanical-disc brakes.