Brompton 3 to 6 speed upgrade - is it possible?

One of the questions we often get asked is ....

"I have a Brompton 3 speed - is it possible to upgrade it to 6 speed?"

The answer is, yes - but maybe not as easily as you may think

The 3 speed Brompton folding bike uses a 3 speed only wheel, the 6 speed Brompton uses a 3 speed hub combined with a 2 speed derailleur - giving 6 gears, and the sprockets / wheels are different

In this video we explain why - and a possible half way solution

We also show a bit of history relating to the different Brompton wheels

If you are looking for information on how to install the sprockets onto a wheel - see below:

Brompton BSR / 3 speed rear wheel sprocket installation
   • Brompton 3-speed sprocket/cog install...  

Brompton BWR / 6 speed rear wheel sprocket installation
   • Brompton BWR 6 speed sprockets