S900 Aero Hydro T, Hydraulic disc brake, Rear, Flat mount, black, Not included

* Optimized power and modulation for triathlon and time trial* Reach Adjust allows for custom fit* Stealth-a-majig™ connector makes initial setup fast and convenient* Bleeding Edge™ technology for quick, hassle-free bleeds* SRAM Model ID: DB-S-900-A1