Shimano CUES BR-U6030 Brake Stop on Cue Designed specifically for widely used 160mm rotors, the Shimano CUES U6030 Flat Mount Hydraulic Disc Brake Caliper features an integrated design that eliminates the need for a separate adapter. The simple, lightweight 2-piston construction ensures reliable braking performance in all conditions. Features Simple, integrated design that is purpose-built for 160mm rotors2-piston construction ensures reliable braking performance under all conditions Compatible with Shimano Mineral Oil | Shimano | Cues Br-U6030 Brake Front