which power meters will work with a sram cx1 group set and a bb90 bottom bracket?
BB90 accepts the same axle as a standard outboard BB - 24mm crank axle.

I think there are two options..


Stages make a power meter that they list as compatible with Force and Rival groupsets. For a BB90, I think it would be the GXP option you're looking for. I would compare the axle/crank spline before buying it though as I'm unsure what the CX1 spline looks like.
Depending on your brake/wheel axle you could also use a Powertap hub. They make various disc and non-disc hubs in a range of axle standards and widths, so you may find something there. You would of course have to assemble it into a wheel, so that would bump the price of this option up a bit and might not be suitable if you're trying to keep the bike below a certain weight?


You say 'keep using a power meter', do you already have one? If so, which one?

Hope this helps!