Fruilmodel makes tracks for the Type 97 Chi-He. The cost of the tracks run about the same as the higher quality Fine Molds Type 97 though.
AFV Club makes Leopard 2 tracks, but I do not know if they are the same type for the Leopard 1 (which the Gepard is based on). They are most likely the same tracks.
Both are available from Discount Models, I have used them for some Fruilmodel tracks before.
http://www.discountmodels.com/