Would it be possible to upgrade a single-speed Strida to 2-3 speeds?

I know there is a Strida model with 3 speeds but the frame is different with respect to the one of a single speed. In particular, the 3-speeds model has a bottom bracket shell suitable to fit a Sturmey Archer KS3 (https://stridacanada.ca/product/sturmey-archer-ks3/).

Do there exist commercially available alternatives to fit in the bottom bracket sheel of a single speed?

Someone did it already, but they are unreachable. This is the post (in italian): http://stridaroma.it/it/works/kit-upgrade-2-speed/. This is the google translate version. If only I could de-focus this picture!

Upgrade kit to 2-speeds Strida

This is a closeup of the bottom bracket in place and the frame of a single-speed Strida.

Strida Bottom Bracket in place closeup

Thanks, Luca

  • Is your bike a belt drive, as per the sample pictures? If so, no derailleur or chainring shifter will ever work, you need the internally-geared hub.
    – Criggie
    Commented Jun 30, 2020 at 10:47
  • The wheels are so small that I think a derailleur would touch the ground if you somehow kludged one into the hangerless dropout.
    – ojs
    Commented Jun 30, 2020 at 11:48
  • @criggie Yes, belt drive. I'll post some updates in an answer later :)
    – the_eraser
    Commented Jul 3, 2020 at 7:56

1 Answer 1


3-speed is possible, but not at bottom bracket without heavy modification to the frame. The usual location for 3-speed gearbox is the rear hub. As far as I can tell, one could rebuild the rear wheel with suitable 3-speed hub. Running the shifter cable to the hub might be complicated with the folding frame, but I don't see how it would be more difficult than running it to the bottom bracket. Some models already have disc brakes, which also suggests that you can run a cable to the rear hub. If disc brake is not required, another option would be kick shift 2-speed hub. These things have a coaster brake and shift gears every time you brake, no cables required.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.