Wunderlich - Steering Angle Limiter for Ducati DesertXIt protects the tank and the frame in the area of the control head from serious damage if your bike falls over or is ever involved in a crash accident. Even more importantly, it also protects your hands and arms from getting wedged in. We're talking about the steering stop. This is a small and unassuming metal cuboid that determines the maximum turning angle of the handlebars and is intended to prevent the bike from falling over at full steering lock.