Umm so the question is - are oem belts actually made by the oem manufacturer - dont think so ! So there has to be a aftermarket supplier that meets oem requirements
Thats all fine and dandy if your running one sled that is new and straight, I have 4 boys a wife and me burning them up lol. Stockers for me cheapies for the rest. Too damn expensive for all, And the gates actually have a warranty. They work well on the stockers, couldnt make them last on the turbo though.