Zipp ZR1 Hub, SRAM XDR Freehub for Zipp Firecrest Wheels. This hub offers improved durability and quicker response with 66 points of engagement. Developed by engineering experts at SRAM, this hub set features key technology from Zipp's Cognition hubs. With a large dust cap and better bearing seals, this hub set has been rigorously tested for 3,222 hours.
Freehub Compatibility ZR1 Hubset : XDR
Part: 00.2018.015.000
