Wilwood Disc Brakes 150-40-7112K: Brake Pads, Smart Pad, BP-40, High-Friction, Semi-Metallic, 7112, High Performance, Set - Wilwood Smart Pad BP-40 brake pads feature a medium-friction compound that's designed to provide you with the ultra-low noise levels, as well as low-dust ...Wilwood Disc Brakes 150-40-7112K: Brake Pads, Smart Pad, BP-40, High-Friction, Semi-Metallic, 7112, High Performance, Set - Wilwood Smart Pad BP-40 brake pads feature a medium-friction compound that's designed to provide you with the ultra-low noise levels, as well as low-dust characteristics of a street performance brake pad. They also have the characteristics of a semi-metallic race compound for superior performance on and off the track.