Gravel bike handlebars are one of the components on a gravel bike that bridges the gap between a mountain bike and a road bike. Although gravel handlebars are typical drop bars like you might find on a road bike, they are often very wide like mountain bike flat bars. It is common for gravel bike handlebars to feature varying degrees of flare - where the drop is not vertical but angled. The wider handlebar combined with the flared drop provides lots of control and stability for riding on rough terrain.