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S-900 Aero HRD Disc Brake Lever and Caliper

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S-900 Aero HRD Disc Brake

Though it seems like a contradiction, stopping well actually makes you faster by letting you hold more speed later while approaching corners. That's the theory behind SRAM's S-900 Aero HRD Disc Brake setup, anyway. You can also carry more speed in confidence knowing that, if worse comes to worst, your brakes are more reliable, more responsive, and modulate better than rim brakes—especially when it comes to the type of deep carbon rims that most of us race for tri and TTs.


  • An aerodynamic brake setup for races against the clock
  • Disc brakes make for faster splits by increasing confidence
  • Eliminates the issues with braking on deep carbon rims
  • Stealth-a-majig design for simplified setup
  • Textured lever increases grip in iffy conditions
  • Reach adjust dials brake lever fit
  • Includes steel-backed organic pads for road-specific use
  • Bleeding Edge tech empowers home mechanics with hassle-free simplicity
  • Item #SRM00DY
carbon fiber
Lever Adjustability
reach adjust
Mount Type
flat mount
DOT 5.1
Rotor Size
140mm, 160mm (not included)
Claimed Weight
8.5oz (240g)
Recommended Use
time trial, triathlon
Manufacturer Warranty
2 years

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