bicycle MTB or mountain bicycle could be a bicycle designed for off-road cycling. Mountain bikes share some similarities with other bicycles, but incorporate features designed to reinforce durability and performance in rough terrain. These typically include a suspension fork, large knobby tires, more durable wheels, more powerful brakes, straight, extra wide handlebars to boost balance and luxury over rough terrain, lower gear-ratios for climbing steep grades and sometimes rear suspension to actuallyrid the trail.

Mountain bikes are generally specialized to be used on mountain trails, [[Single track[jump trails] (mountain biking) |single track]], fire roads, and other unpaved surfaces. Mountain biking terrain commonly has rocks, roots, loose dirt, and steep grades. Many trails have additional TTFs (Technical Trail Features) like log piles, log rides, rock gardens, skinnies, gap jumps, and wall-rides. Mountain bikes are built to handle these sorts of terrain and features. The heavy-duty construction combined with stronger rims and wider tires has also made this variety of bicycle fashionable urban riders and couriers who must navigate through potholes and over curbs.