Simple and sleek Ahoy Single Speed Bikes (ATB) is the perfect bicycle, which can conquer any terrain. The all-time bestselling ATB series comes with the life-long durability of a steel frame. Safety of Powerful Disk-brakes. The elegance of stunning colors and graphics. These single speed bikes are for those who are searching for an easy-to-handle cycle that can be your best mate on every ride you take. An all terrain bike, also known as an ATB or just a mountain bike, is a bicycle specifically designed for off-road cycling on a variety of terrains. These Bikes Without Gear have wide tires, strong brakes and suspension systems, and highly capable frames to handle rough terrain.