I couldnt directly compare but I had a Carbinite coated 2.8 pulley on my 2003 Cobra with a TVS. It came out great and seemed to work well. I just picked up a 3.5 Griptech for my Coyote and its a very nice piece. Different processes but same idea, roughed up surface to help the belt grip the pulley. After having both I would say my Griptech seems to be a nicer overall piece.Anyone? From what I understand both companies will treat pulleys you send in to them. I’d love to know if one is better than the other...