replace mirror track

Thank you for reaching out to us! Your bottom track shown here looks like it uses a concave roller wheel. We sell the 23-270, 23-271, and 23-272 tracks but not in the length that you need. What you could do is purchase two shorter tracks, piece them together, and cut off the excess with a hack saw. 

As for the top track, we have the 23-244, 23-245, and 23-246 but I don't know if they'd be compatible with your top roller or guide. Would it be possible for us to see photos of that?