Need new tracks for old 70's bi-fold metal doors

A quick learner from Arlington Heights says:
August 26, 2017
Hello, I've seen a few threads on your website with similar metal bi-fold doors, but mine seem to be a different variation.

NOTE: The square plastic guide cap you see in my photo is incorrect, a part I bought at a local shop and doesn't work with my hardware.

What I am looking to replace is the lower (ground) track, if I will need to replace the pivot and guide pins for this track, I would like to know which ones would fit this door.

Thanks!
Bifold pin
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Paul from SWISCO responded:
August 31, 2017
I'm afraid your bottom track is no longer available. If you are just replacing the bottom track, you can consider one of ours. See our 21-401, 21-402, 21-403, or 21-404. You will also need a pivot pin like our 21-001 and a guide pin like our 21-007 to go with these tracks, since your old pins won't work with them.
Bifold Door Guide Pin
Bifold Door Guide Pin
21-007
$3.87
Bifold Track, 3' Opening
Bifold Track, 3' Opening
21-401
$8.71
Bifold Track, 6' Opening
Bifold Track, 6' Opening
21-403
$18.57
Bifold Track, 5' Opening
Bifold Track, 5' Opening
21-402
$17.15
Bifold Track, 4' Opening
Bifold Track, 4' Opening
21-404
$12.75
Bi-fold Door Pivot Assembly
Bi-fold Door Pivot Assembly
21-001
$6.95
How to Install Bi-Fold Closet Door Pins
How to Install Bi-Fold Closet Door Pins
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Bi-fold Door Repairs
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