Yes, they are 15" Konig Heliums. Very light. Great improvement over the 17" Konig Tantrum's that were on it when I bought it. I also stripped out a very nice custom system that was in it. It also had (gasp!) altezza's on it when I got it that I swapped to a kid w/ an EX. So I now have an Si w/ EX tails. lol. Now just need to get rid of the body kit and put OEM front and rear bumpers and grill on it and I'll be dericed. Then I may even be a little bit of a sleeper since most people think that it's an EX anyway w/ the tails.