Re: Belt slip = 18 psi = 12.05@115 in full street trim
PA/XFIRE, I think your number is incorrect. I have the Gates K081153 and it is 115.3" long. The K081145 is 114.5". I believe these are the inside diameters. Add about .7" for outside diameter. The K081145 is the same as the factory belt.
MikeR