... Alunimum with plastic cap Running Boards / Side Step Part No:RB-BW01Car Model: BMW X3Material: ... plastic cap.1. Give your vehicle a sure step that prevents slipping in any weather.2. Solid ... custom mounting kit, and a super high-grip specialized step.3. No drilling, No cutting, Easy installation.4 ... Grille guard ,Rear Guard,Bull Bar, Aluminum running board,Roll bar,Side Bar,Rear skid Bar, Engine plate ...