Convert your current Prime SR1, SR2, SR1D or SR2D hub to run an 11 or 12 speed SRAM XDR cassette and enjoy all the benefits that go with it.
Features:
- Replacement star ratchet free-hub body
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Prime Hub Compatibility: Prime SR1, SR2, SR1D & SR2D hubs
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Cassette Compatibility: SRAM XDR 11 & 12 speed