Pro-X Sintered Brake Pads 37.109202 ProX brake pads are produced under a very strict sintering process. In this sintering process metallic particles are fused together in combination with heat and pressure Resists high temperatures during heavy braking and offers greater durability over organic brake pads Offers a strong controllable brake power in combination with long life Specially designed for a softer compound in the front pads and a little harder compound on the rear pads