Shimano, GRX BL-RX717 / BR-RX410, Road Hydraulic Disc Brake, Front, Flat mount, 160mm (not included), Black, IRS7174DLF6SC100

Shimano, BR-RS305, Road Mechanical Disc Brake Caliper, Front Only, Flat mount

SRAM, Red eTap AXS D1, Road Hydraulic Disc Brake, Left, Flat mount 2 piece caliper, Black

Shimano, XT BL-M8200 / BR-M8220 Kit, MTB Hydraulic Disc Brake, Front and Rear, Flat mount, Disc: Not included, Black, IBRM8220UPGKIT1

Shimano, XTR BL-M9220 / BR-M9220 Kit, MTB Hydraulic Disc Brake, Front and Rear, Post mount, Disc: Not included, Black, IBRM9220UPGKIT1

Shimano, GRX Di2 ST-RX825 / BR-RX820, Road Hydraulic Disc Brake, Front, Flat mount, 140 or 160mm (not included), 146g, Black, IRX8251DLF6SC100A