The current rear battery light can be retro-fitted onto older bikes, but how this is done depends on whether you have a round or rectangular shaped rear lamp fitting.
If you have a rectangle shaped lamp you will only need the battery lamp, details of which can be found here.
If you have a round shaped lamp you will need to get the lamp with brackets to fit it, details of which are also on our website.
To order these items, you will need to contact a Brompton dealer. You can find your neasrest one using our dealer locator.