Downhill bike
A downhill bike (also known as a downhill mountain bike) is a full suspension bicycle designed for downhill cycling on particularly steep, rocky trails. Unlike a typical mountain bike, durability and...
Downhill bike - Wikipedia
Mountain biker rockets down ski slope at 135 mph
Eric 'The Red Baron' Barone, a high-speed mountain bike specialist from France, shot like a rocket down a steep slope at the Les Arcs ski [...]