Rizoma Engine Guards PM357A - SilverRizoma Engine Guards PM357A Rizoma engine covers are specifically developed for each motorcycle model, which guarantees the best possible compatibility and practicality. These guards combine simple lines with utmost attention to detail, ensuring they offer performance and act as appealing design features. The main body is made from billet aluminum while the slider is made from Delrin, which allows easy replacement in the event of an accident.