2009 Mitsubishi Lancer GTS With Rear Disc Brakes Approved Performance C1142R - [Front Pair] Premium Performance Drilled and Slotted Disc Brake Rotors Please verify that this fits your vehicle. The last image of this listing shows compatibility. If your vehicle is not listed(be sure that the fitment notes match) contact customer service before ordering. Includes (1) Front Left Premium Performance Drilled & Slotted Disc Brake Rotor (1) Front Right Premium Performance Drilled & Slotted Disc Brake Rotor G3008 castings machined to O.E. specifications, and made to fit vehicle specific applications requiring NO modifications Cross Drilled holes promote air flow and help keep the brakes cool in aggressive driving conditions, while the slots continue past the rotors edge to disperse water and debris to guarantee smooth, quiet and consistent stopping power High performance braking along with a Double Disc Ground surface reduces noise and makes for an easy Break-In process