SRAM, G2 Ultimate A2, MTB Hydraulic Disc Brake, Front, Post mount, Disc: Not inc 710845860331 | eBay
SRAM G2 Ultimate brakes review - BikeRadar
SRAM SRAM G2 Ultimate Disc Brake and Lever - Rear, Hydraulic, Post Mount, Carbon Lever, Titanium Hardware, Polar Grey Anodized, A2 - One On One Bicycle Studio