PROFORCE 34180G PREMIUM ANTI RUST COATED DISC BRAKE ROTOR (Rear) Fits BMW X5 Best Quality and Value. Superior Braking Power. Equal to or exceed OE weights and metal characteristics. Cosmetic Enhanced Appearance: the brake discs can be seen through the alloy wheels. The aluminum silver color of GEOMET. Braking behavior: the low thickness of the coating on braking surfaces does not damage the quality of braking during the vehicle first use and enables a temporary protection of brake discs surfaces. Temperature resistance (400C): it enables to keep an excellent corrosion resistance on vehicles. Protection inside the vents: no oxidation inside the fins  better thermal exchange while braking.