Zipp Replacement Freehub Body for Firecrest (ZR1 SS) Variant:SRAM XDR Measures: 5 x 21 x

Measures: 5 x 21 x 9

the Speedcraft is fully loaded with our most advanced technology for the ultimate in sports performance

We also built it with external spoke nipples to allow for quick and easy serviceability

we're able to reduce the amount of insulation material required

Zipp Replacement Freehub Body for Firecrest (ZR1 SS) Variant:SRAM XDR Measures: 5 x 21 xFreehub body suitable for Zipp ZR1 disc brake and rim brake rear hubs. The ZR1 hub can be converted with this freehub body for the use of Shimano 11 speed road cassettes. Specifications Material: aluminum axle type : 12x142 mm thru axle or 5x135 mm quick release Compatible hubs: Zipp ZR1 hubs (disc and rim brake version) Compatibility: Shimano 11 speed Road Mfr Claimed Weight 68g