You can order it from Hayden directly. I read he wasnt selling them to other vendors anymore.Ordered one from Phat Performance Parts, should be here tomorrow. They are a little hard to come by........
http://www.phatperformanceparts.com/ProductDetails.asp?ProductCode=M6-TENSIONER&CartID=
I called Hayden and the are selling to other vendors, in fact I've received mine from "Phat Performance". The are having trouble meeting demand however.You can order it from Hayden directly. I read he wasnt selling them to other vendors anymore.