Downhill bike, also known as downhill bike. English referred to DH. It is a very challenging activities. Riders use a special DH bike on the hillside gliding, or even falling the mountain to seek excitement. Activities and more at the ridge, mined, snow and other areas to carry out. Austrians use DH to create a world record 210.4KM / H's. Downhill bicycle frame angle with mountain bikes differ, replacement parts and mountain bikes are the same imperial units. You must wear head movements helmet, armor and other equipment When you do this live. Fork damping stroke than XC bikes and mountain bikes longer. Tire width is generally more than 2 inches.