Shimano K04S Disc Brake Pad and Spring It's time to start stopping When the extreme conditions demand more stopping power and less brake fade, Shimano's K04S Disc Brake Pad and Spring provides additional bite and longer pad wear than resin compounds. These original Shimano pads are compatible with many two-piston road and mountain Shimano brake series (see comprehensive list below). The K04S pads boast a stainless steel backing plate-without radiator fins-and includes two pads, enough to outfit one brake caliper with fresh brake pads. Upgrade your stopping power in any condition with the K04S Disc Brake Pad from Shimano. Features Metallic pad compound for additional stopping power in foul conditions and longer pad life than resin compounds Compatible with the following Shimano brake series XTR M9100, DEORE XT M8100, DURA-ACE R9150, ULTEGRA R8050, SHIMANO 105 R7000, TIAGRA 4700, METREA U5000, GRX 11-speed, GRX 10-speed, Cyclocross/On-Road Disc Brake Manufacturer part number WP-Y8N398020 | Shimano | K04S-Mx Metallic Disc Brake Pads Metallic