That is correct. Kumho makes the Ecsta SPT for a matched set, front and rear. Mixing brands front to rear is not going to hurt anything. I have original Conti in front and Kumho Ecsta SPT on the rear. It came that way when I bought it used. It handles and rides just fine. It also runs the 1/4 mile pretty damn good. Just DO NOT mix tires on the front or rear, keep them in pairs.

MikeR