OKB Grigorov specializes in resin, photoetch and turned metal barrel conversions for armor. One of their latest releases is the tracks for the Russian T-34 mod.1940 third variant.
This aftermarket set includes parts in grey resin. As you can see from the pictures, the casting of the parts is pretty good, without any bubbles in the resin and small attachment points.
This set provides you with 4 sections of track and the pictures show the fantastic level of detail of the tracks, both inside and outside sides.
The sections of track are cast flat, so you would have to gently bend them to shape, using the wheels from the kit to get the proper curvature radius. The resin is very thin, so this should be relatively easy. I would suggest to dip the tracks in hot water before bending them around the wheels and dipping them in cold water afterwards to “set” the curvature in.