Your 2005 Mitsubishi Lancer is equipped with brake discs in its braking system. When you decide to slow down or abruptly stop, the brake discs are firmly held by the brake pads so that the axle will stop rotating since they are connected together. The brake pads are attached inside the brake calipers that sandwich the brake discs. Brake pads have steel backing and friction material bound to the surface facing the brake discs or drums. With the brake pads available, they are able to convert kinetic energy to thermal energy by friction. The conversion happens when the pads come in contact with the brake discs or drums, virtually heating them up. They then stick together to provide your Mitsubishi Lancer the stopping power that you will need to safely bring your auto to a halt. This stopping power comes from the friction generated by the pads and the discs. When the brake pedal is released, the brake pads eventually disconnect themselves from the brake discs. The PBR Brake Pads are among the most commonly used pads because of their durability and longer serviceability. The N1010-139845 Brake Pads are made from quality materials proven for their performance. If you need to replace your stock Mitsubishi Lancer Brake Pads, we can be reached through our web store that is manned by call center agents who will be available to assist you.