The Huffy Men's Extent 26 in 18-Speed Mountain Bike is prepared to handle tough terrain. This mountain bike has 26 inch wheels with wide, knobby tires that help you keep your grip over dirt, grass and mud. A front suspension fork absorbs bumps and gives a smooth ride, while disc brakes and a Shimano rear derailleur ensure that shifting and stopping are just as easy as the ride. The adjustable seat makes it easy to accommodate riders of different heights.