If your are racing then get the TC pipe you will love it. and you can also get some disc for it when you go riding in the woods so it is not so loud and you don't make the neighboors mad.
2007 Honda 450ER W/ White plastic- Houser Slicast Longtravel +2 A-arms, Axis Triple rate shocks w/ rezzy's, Houser +1 steering stem, Stremline steel braded brack lines front & rear, Nac's case saver, PEP steering dampner, Tag T2 chrome handlebars, Works connetion pro perch clutch lever, IMS/Roll powermadd handgaurds, Houser Graphics Kit, Houser #plate backgrounds, Douglas ultimate front w/ groved radials, Douglas ultimate beadlocks rear with Maxxis MX tires, Lonestar +2+2 Axle & anti fade lock nut, AC racing black line front bumber, AC racing black line nerfs w/ relocated pegs, AC racing rear grab bar powdercoated black, Pro design kill switch, Pro design pro flow kit w/ K&N filter & outerwears wrap, Honda CRF cam, Sparks full exhast, Quadtech hood scoop.
2007 Sponsors- Houser Racing, Nac's, K&K Racing, IMS-ROLL, Tag-Metals, Quadtech, Lonestar Racing, Outterwears.