Brompton 3 to 6 speed upgrade - is it possible? - YouTube
Brompton 3 Speed Rear Wheel – BWR (For 6-speed) Black | Cycle To-Go
3-spd hub & internals STURMEY Sunrace QHUBR3-SA
Brompton 3-speed sprocket/cog removal - BSR - Brompton Standard Ratio - YouTube
BrommiePlus Deraille|-Brommieplus-Products
Brompton 3 Speed Rear Wheel – BWR (For 6 -speed) Silver | Cycle To-Go
Brompton X2+1 Unibody Cog Set Thumb Shifter Barrel nut Kit (MiniMODs) 2S->3S or 6S->9S
Brompton X4Ceramic Brompton Ceramic Ball Bearings 3/4 Speed Hub External 4 Cogs Compatible (MiniMODs)
BrommiePlus Deraille|-Brommieplus-Products
Sturmey Archer Internal Gear 3 Speed Hub 36H for 20 inch Brompton Folding Bike | eBay
BrommiePlus Deraille|-Brommieplus-Products
Brompton Versnellingsnaaf SA 3V BWR Zwart voor 6Spd. QHUBR3-BWR-BK - Vlerick Fietsen
Sprocket set incl chain guide disc 13 T - 3 speed | Brompton Bicycle USA
Brompton WHEEL 3 SPEED SS SPOKES STURMEY BLACK : Amazon.co.uk: Sports & Outdoors
Brompton hub gear trigger, 3 speed - Sturmey Archer and SRAM | eBay
Sturmey-archer Internal 3 Speed Hub Coaster Brake 36 Holes Old 117mm For Brompton Folding Bike - Bicycle Hubs - AliExpress
Brompton X3 Unibody Cog Set Thumb Shifter Barrel nut Kit (MiniMODs) 2S->3S or 6S->9S
Brompton Internal Gear Hub SRF-5(N) 5 X 2 (or more) Sprockets / 10 speed 28 holes kit (Sturmey Archer) cog set options
Brompton BWR 3 Speed Rear Hub
Sturmey-archer Internal 3 Speed Hub Coaster Brake 36 Holes Old 117mm For Brompton Folding Bike - Bicycle Hubs - AliExpress
Info - Brompton Rear Wheel Removal and Re-Installation with Sturmey Archer Internal Gear Hub (3/6 Speed) - Freedom Folding and Electric Bikes
![Brompton Wide-Range 3-Speed Hub [for 6-Speed] | Perennial Cycle](https://eadn-wc04-3021648.nxedge.io/cdn/pub/media/catalog/product/cache/df4b30e21630620425f1dcb4f440634e/B/r/Brompton_Wide-Range_3-Speed_Hub_for_6-Speed_1.jpg "Brompton Wide-Range 3-Speed Hub [for 6-Speed] | Perennial Cycle")