X4 Brompton 3rd party 2/3 speed Hub 4 speed External 4 Cogs upgrade kit (MiniMODs)

X4 Brompton External 4 Cogs upgrade kit compatible with MiniMODs, Hubsmith 2/3 speed hubs and most ORZ rear hubs Options: (a) Circlip type kit :Circlip type 4 speed free hub body x 1.We will include 2 sizes of snap rings (1.2, 1.5, 1.8 or 2mm. Pick 2 during checkout in "order comment". 1.2 and 1.8 will be default if not specified)Black screw caps are not included, you can utilize the original ones. (b.) Lock Nut type KitLock Nut type 4 speed free hub body x 1Lock ring (shimano spec) x 1Left and right screw nuts (replace old ones for proper dimension)Lock Nut type hub is external 5 cogs possibleNote :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.