On the L and T types, most components are designed specifically for Brompton. High pressure tyres and a powerful braking system are fitted and these transform the look and feel of these bikes: also the Brompton folding pedal is standard. If you expect to be a regular user, it's best to opt for one of these. Moreover, these models can be factory built to special order, using any of the available Brompton options and colours.

3-speed
The highly efficient Sram 3-speed hub, proven over many decades, has a gear change, which could not be simpler. For many users the three well-chosen ratios are fine, ideal for general use and about town.

6-speed
A second sprocket on the rear hub serves to give six evenly spaced gears with a range of 213%. The unique derailleur mechanism, designed and made by Brompton, is compact and doesn't affect folding. Changing gear is easy. For both triggers up gives a higher gear, and down a lower gear. Maintenance is minimal (though the changer may need cleaning after a muddy ride). With its very low transmission losses, this multi-gear system is the right choice both for touring and for riding in hilly areas.

Special gearing
The standard gear ratios are given in the specifications page. On made-to-order bikes we can also supply gearing as follows:
* 6-speed models, 12% lower
* 3-speed models, 12% or 18% lower.