Rudy
I think you are running rich bro. Any pipes will get hot if that is the case. You are the only one I know, including myself, with HK 3" that has the "heat" issue. I really don't think you can blame it on the pipes yet. The HK 3" is a 1 7/8" pipe surrounded by the 3" "heat shield" outer wall. If you notice the open part on the bottom allows the air to circulate better than the stockers. I think you need to check some other things before blaming it on the pipes til you are sure that is the cause.......then if it is you got a bad set. I have the Hypercharger, rejetted and HK 3" and I can tell you it is cooler to the touch than the stockers because of how much further off of the inner pipe the shield is and the air circulation between them. The only time mine are noticably warm is sitting still running with no air on them for a while. Good Luck!
Goestryder
I paid $320 for mine shipped ...... HK big 3" straights. That was on sale with a price match new in the box and last summer. There were some that went for $360 new in the box on e-bay last week as I gave someone on here a heads up and they bought them. If you are looking at other HK's remember the baffles are fixed (welded) on the 2.5” American Classic Straights, the Strippers, the 2.75” Tapered Straights, the 3” Dual Sideburners, the 2-into-1 Sideburner and the 2-into-1 Xccelerator. All of the rest of the HK's have removeable baffles in case you want to swap baffles or use thunder monsters down the line. Good luck!