Downhill bikes are specially designed bicycles built for steep, rugged terrain. They feature a sturdy frame, wide tires, and advanced suspension systems to absorb shocks from jumps and rough trails. These bikes typically have a lower gear ratio, allowing for better control and speed on downhill slopes. Riders use downhill bikes primarily in mountain biking competitions and recreational riding. The geometry of these bikes is optimized for stability and maneuverability, making them ideal for navigating challenging courses. Safety gear, such as helmets and pads, is essential for riders due to the high speeds and potential hazards involved.