Shimano offers a solid spectrum of disc brake pads for their current brakes that allow riders to choose the best combination of materials and features for their riding style and preferences. The bottom line for riders who desire the best combination of pad life, durability, stopping power, and heat dissipation are the J04C Metal Disc Brake Pad and Spring with Fin. Developed from Shimano's collaboration with IceTech, the J04C features radiator fins and pad backing technology that actively cools and releases heat as you ride and brake.
With this metallic pad compound, the backing plate is stainless steel instead of aluminum. Sintered metallic compounds generally offer superior wear to resin pads, and almost never chip or get damaged, making them supremely reliable. There are those who prefer the feel and stopping power of metallic pads, especially when wet and/or muddy, but resin compounds may offer better control and power in dry conditions. This is a preference issue, though there is little doubt metallic wear longer, and less doubt that they can be more prone to brake squeal.
|Material/Compound||Steel and sintered metal