Brompton Gear Range Mod / X3 Unibody Cog Set (MiniMODs)

Brompton X3 Unibody Cog Set Thumb Shifter Barrel nut Kit (MiniMODs) Quick and easily expand your gear range using rear external cog set, so 2S->3S or 6S->9S

X3 Unibody Cog Set (11/14/17T)

Stock Components Compatible (A 3 speed shifter and new 11 speed chain are required) #X3UnibodyCogSet

Light weight yet ultra durable SCM440H heat treated steel. ED-Electrophoresis deposition surface processed black

Stock 2 speed hub compatible

X3 + 1 (19T) for 4 speed external cogs upgrade base

Part Options:

(a.) CNC machined 3 cogs (11-14-17) in One Unibody + 1.5mm Circlip snap ring (MiniMODs)

(b.) 3 speed thumb shifter Left or Right (SunRace or Sturmey Archer)

(c.) Titanium Shifting cable terminal Barrel Nut (MiniMODs)

(d.) Extra Cog for 4 speed or beyond application (SunRace)

Note:

1. Older stock tensioner might suffer from deformation and cause it to touching chain on 11t position (you will need some filing or add tensioner washer to correct). Aluminum 3rd party tensioners are stiff enough to void this. 11 speed chain also helps with its narrower profile.

(a.) X3 Unibody Cog Set (MiniMODs)

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

Prefer 10 Spped and up Chain. Leading teeth on-shift design for ultra smoothness.

Circlip type for maximun compatiblity (1.5mm custom snap ring included).

For 9 spline Shmano spec, compatible with Stock Brompton 2 speed hub (BWR 3x2 6 speed hub) and most third party external cog wheel mods (e.g. MiniMODs, Orz, Hubsmith, Joseph Kuosac, etc. )

Not compatible with Sturmey Archer SRF-5 (W) 5 speed hub or Brompton BSR 3 speed, but compatible with SRF-5(N) 10 (5x2) speed hub, so 5x3 is possible

(b.) 3 speed indexed thumb shifter

Right handlebar version

Barend version

Left handlebar version

(c.) Shifting cable terminal Barrel Nut (MiniMODs)

Titanium Barrel nut shifting cable terminal fixed.

(d.) Extra Cog for 4 speed or beyond application (SunRace)

Extra cog for even more speed expansion project (e.g 11-14-17T + 21T) as shown in the photo (require custom free hub body which is not included in this listing).

Heat treated steel. ED-Electrophoresis deposition surface processed black

Leading teeth chain on design, precise chain reaction

Shimano 9 splines free hub body compatible. For 10 speed and up chain.

X2 + 1 with extra cog also available in next release