Brompton X4 Unibody Cog Set (11/13/17/21T) to modify 2 speed to 4 speed, or 6 speed to 12 speed Stock 2/6 speed wheelset (or 3rd parties compatibleones) Compatible #X4UnibodyCogSet Reuse your old wheelset (C Line) and expand to #WiderThanPTLine 4 speed gear range

X4Ceramic Brompton 4 Speed Hub External 4 Cogs Compatible w Ceramic Ball Bearing 28 Holes for 2/3/6 Speed Brompton (MiniMODs) Part Options: (a.) 1 Front hub + 1 Rear Hub Only. It is 4 speed external cogs compatible (X4Ceramic). You will need to source your own spacers, cogs (shimano 9 splines). We will only 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) (b.) 1 Rear hub only (X4Ceramic). You will need to source your own spacers, cogs (shimano 9 splines). We will only 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) (c.) 1 Front hub only (with ceramic ball bearings). (d.) X4Ceramic Combo : 1 Front hub + 1 Rear Hub + X3 Unibody Cogset (3 speed ready) Will include the spacers, X3 unibody cogset for a 3 speed ready unit (4 snap rings 1.2, 1.5, 1.8 and 2mm for maximum compatibility). Add your own 4th cog (shimano 9 spline spec 1mm thin extra cog, not included) for 4 speed upgrade

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 Kit Lock Nut type 4 speed free hub body x 1 Lock ring (shimano spec) x 1 Left and right screw nuts (replace old ones for proper dimension) Lock Nut type hub is external 5 cogs possible

Brompton X3 Unibody Cog Set (11/14/17T) to modify 2 Speed to 3 Speed or 6 Speed to 9 Speed Stock Components Compatible #X3UnibodyCogSet with options for Thumb Shifter, Barrel Nut Kit and Extra Cog Part Options: (a.) CNC machined 3 cogs (11-14-17) in One Unibody + 1.5mm & 1.8mm Circlip snap rings (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)

Brompton X2+1 Unibody Cog Set (11/16 + ??T) #X2Plus1 Part Options: (a.) X2 + 1 Combo Set : CNC machined 2 cogs (11-16T) in One Unibody + Large Cog (18 or 19 or 21T or 24T) + 1.2mm Circlip snap ring + 1mm Spacer (MiniMODs) Important note : Some (not all) steel rear frame Brompton can take the biggest cog up to 18t (and most Ti rear frame up to 17T), so cog larger than that with stock circlip snap ring hub will require work on the rear frame right end. (Our X3 Unibody Cog Set :11/14/17T has the non-intrusive compatibilty to frame spec, please consider X3 if you are not a hard core modder) Stock 2/6 speed tensioner can only take cog up to 19t, anything larger you will need 3rd party custom ones. We are working on 4 speed free hub body and accessories for 4 or even 5 speed upgrade, estimation of delivery in December 2020. We will supply 1.2 mm circlip as default (stock hub compatible), let us know if you want other size. (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) (e.) Misc parts for custom build (more can be found here) 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.

Upgrade Stock 2/6 speed H/L indexed thumb shifter to 3 speed (1/2/3) indexed Affordable and Eco-friendly upgrade #2Sx3S mod kit 2 Speed to 3 Speed Mod Kit Content: Two white plastic bits for 3 Speed index 1/2/3 speed display label Teflon gear cable Brompton spec (You can reuse the housing) Cable end Terminal (please specify Black or Silver colour, or default black colour)

Need to replace your shifter cable? The MiniMODs shifter wire is made of steel with slick finishing to provide strong and smooth operation and suitable for use with Bromptons. Specifications: Shifter Cable Type: Slick polished Colour: Silver Strand construction: 3 × 5 Length: 1.7 m Cable diameter: 1.1 mm Available as a single piece (end cap will be provided) or in sets of 10 pieces or 30 pieces.

Brompton 2 to 3 Speed MOD Kit (a.) Rear Cogs Set with 3 cogs (MiniMODs) (b.) 3 speed thumb shifter (Sturmey Archer) (c.) Shifting cable terminal Barrel Nut (MiniMODs)

Spacer Washer inside tensioner to adjust position of tensioner outwards for gear upgrades. Compatible with MiniMODs, Brompton Stock 2 speed or BWR 6 speed and other third-party tensioners.

Upgrading Your Gears？ Check out these components for external cog sprocket mods! Misc Fine-tune Components: Washer Spacer Circlip Photo (A) Tensioner Washer 1mm Spacer Washer inside tensioner to move Stock (or H&H) tensioner outward Material : Stainless Steel (B) Tensioner Washer 0.5mm Spacer Washer inside…

Anti-Slipping Lightweight Seatpost MiniMODs design, KCNC manufactures AL7075-T73 (aerospace grade material), with ultimate tensile and yield strength, also reduces the susceptibility to stress corrosion cracking Grooved surface to prevent annoying seatpost reclampping every now and then. Special Hard Anodization colour treament process to withstand unavoidable surface scratches from daily folding unfolding routine.

BCD130/110 All in one Chainring fits Schlumpf Speed/Mountain Drive Ideal for small wheeler upgrade aiming for some speedy rides.