Fits Hadley hubs with Shimano Style 8,9,10 speed freehubs that have 20mm inside diameter freehub ball bearings.

See photo of freehub, this is the original style that has no laser markings.

This retrofit conversion kit uses the 2020 axle and new bearings and spacers to adapt to this new axle.

Will not work with 2020 and newer Shimano Freehubs.

Special Tools Needed to install

Recommend using Hadley 18mm thin wrench and 17mm open end wrench.

Kit includes a new bearing pre-load adjustment ring that requires a Hadley 29mm pin spanner wrench or equivalent.

Kit includes a new white plastic freehub ball bearing retainer that requires a Hadley 26mm pin spanner wrench.

Recommend using Hadley Tools to remove existing end caps.