ZIPP 188 Freehub and Axle 10 Speed to 11 Speed Conversion kit - Shimano/SRAM

Zipp Speed Weaponry Rear Axle Conversion Kit.

Compatibility

Only to be used to convert Zipp's 188 V7 10-speed rear hubs to 11-speed

Not to be used on 188 V6 or earlier rear hubs