This is a new in box Sram Red short cage rear derailleur, Max 28t. This was the top level rear derailleur that Sram made at the time, so if you have a bike with this generation of 10 speed Sram and you have broken your old one or just want to upgrade from Force or Rival this is the derailleur for you. This will work with any of the Sram 10 speed road groups. If you have any questions feel free to ask, I will answer to the best of my ability. I only ship to the continental United States.
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