This is a freehub kit that fits the Zipp 188 Sram XDR driver.
Compatibility: Zipp Super 9 Disc brake (CL & TU)
Body: 176/177 Sram XDR
Note: Sram XD drivers are only compatible with XD cassettes, not XDR cassettes.
This product is expected to become available for purchase on Monday, August 9, 2021