I bought the RRE 3" for EVO O2 housing almost exactly one year ago. Friday, I heard the sound of a leak, so when I got home I crawled underneath to find it was in the flex section. I'm gonna email them to see if they have any type of warranty...though I doubt it. I don't know if that's a good lifetime on one of these or not but, at $230 a pop I can't afford to be replacing it every year. It did fit perfectly though /ubbthreads/images/graemlins/uhh.gif