Freewheel body suitable for Zipp ZR1 disc brake and rim brake rear hubs. The ZR1 hub can be converted with this freewheel body for the use of Shimano 11-speed road cassettes.
FEATURE
Material : aluminum
Compatible hubs : Zipp ZR1 hubs (disc and rim brake version)
Compatibility : Shimano 11-speed Road
Weight : 66g