bottom track

Good morning, I need to replace 2 58 1/2" bottom tracs for a set of sliding closet doors(plain/no mirror) Trac I have now is identicle to your pictures except mine has a little 3/8" high "hump". I assume for the concave wheels to ride on. Enclosing pictures of bottom trac and wheel assembly. Is/Was this one of your products? Bottom tracs need to be replaced due to water/urine(cats) damage. any help would be greatly appreciated. thank you..../gary