Universal Cycles -- Sram Red 22 Flat Mount HRD Disc Brake [00.7018.233.005, 00.7018.233.004]
Amazon.com : SRAM Red 22 Complete Flat Mount Caliper Assembly 18mm Front/Rear : Sports & Outdoors
First Look, First Ride: SRAM's Redesigned RED 22, S-700 and New Force 22 Hydraulic HydroR Levers, Hydraulic Disc Brakes - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media
SRAM Force 22 HRD Shift/Brake Lever & Flat Mount Caliper - Components