EBC Ultimax Brake Pads are a great OEM Replacement Pad for your daily driver. The Ultimax Brake Pads use a blend of synthetic aramid fibers and metallic filament to create an extended life brake pad that is vibration free. That special center line slot that is incorporated into your EBC Ultimax Brake Pads helps to prevent thermal heat cracks and allows air to flow through keeping the pads cooler when durring tough breaking conditions. EBC Brake Pads use a special break-in material on all of their premium brake pads to ensure proper brake pad bedding which helps with pad and rotor longevity. NOTE when shopping for pads it is recommended that the same compounds are used front and rear. Each compound has unique stopping characteristics and putting different compounds on the front and rear of your vehicle could compromise the performance of one or both sets of brake pads. Professional installation is recommended for all brake pads to ensure your safety and the safety of others.