Kool-Stop sintered metal disc brake pads are designed to give your bike performance braking in extreme conditions, e.g. XC, downhill, trials and dual slalom riding. Our pads have a quick break-in period so you get maximum performance during those demanding rides when stopping power, durability and long pad life are required. Sintered metal compounds have a higher resistance to brake fluid contamination and should not be used on ceramic rotors or in closed hydraulic systems.