Brompton X4Ceramic Ball Bearings 3/4 Speed Hubs External 4 Cogs Compatible 28H (MiniMODs)

Will include the spacers, the rear hub and the X3 unibody cogset for a 3-speed ready unit (4 snap rings 1.2, 1.5, 1.8 & 2mm for maximum compatibility).

3 sprockets (11-14-17T) in One Unit. Precision CNC machined.

SCM440H heat-treated steel. ED-Electrophoresis deposition surface processed black.

Most efficient drive output, crispy clear shifting reaction.

Plug and play, very easy to install and finetune. Stock components compatible.

11 Speed and up (narrower) Chain required. Leading teeth on-shift design for ultra smoothness.

Circlip type for maximum compatibility (1.5mm custom snap ring included).