SKS: SAY GOODBYE TO FLYING MUD! The SPEEDROCKER EXTENSION clip-on mudguard extension mainly protects riders behind you from dirt and wet conditions. The extension made of black, impact-resistant plastic can be easily clipped onto the tried and tested SPEEDROCKER rear mudguard, thus extending it by 170 mm. It can be mounted and removed without any tools in just a few seconds. The splashing between the tyre and mudguard at the lower end also allows it to better deflect any spray water and mud. This not only protects the rider's back but also their cycling companion from any flying dirt.