4 Speed X4 Brompton 2/3 speed upgrade kit (MiniMODs)

Note : This listing is only for the 4 speed free hub upgrade kit (circlip or locknut type). You need your own 3rd party rear hub from MiniMODs, Hubsmith or most ORZ wheelset. We will suggest using our X3+1 (11-14-17t unibody cog set with one extra larger cog) for easy and efficient performance (NOT INCLUDED) The upgrade free hub body is with steel balls bearing, should you need ceramic balls bearing or a whole 4 speed set, please check out our X4Ceramic hubs.