They are NOT the "httc" ported or polished. theese are the SE TC88 performance head straight out of the box at $850.00. I'm 260 pounds and sometimes ride two-up and there isn't a bad spot in it for street use. Granted, at about 3000 rpm there is a VERY, VERY, sweet spot that will straighten your arms out in a hurry, but no bad spots even at take off. Just for kicks I did the "Teresi Dyno Drags" on the back of a semi at reno HD durring street vibrations (not real world drags by any sense) and nailed just about everyone that day even giving up C.I. to alot of other bikes. I ran the following that day:
10.582@116.5, 11.001@119.400, 10.837@122.600, 10.895@121.900, and 10.714@122.600. Not too shabby