From RPi's site - "RPi skid plates for your Z4 M coupe help protect your front bumper from unfriendly driveways and speed bumps. Powder coated and made from high quality aluminum, the skid plates install in minutes and require no cutting, drilling or modification to install."
These are brand new and never installed. Yours for $35 + shipping. Retails for 59.99+shipping from RPi!