I have a new uninstalled real carbon fiber rear bumper M5 diffuser and also a new M5 Hamann style front carbon fiber lip. 1996-2003 e39 525i 528i 530i 540i M5. Will fit any e39 with an M5 or M-tech rear and front bumper. I've got a few mufflers with nice tips that fit nicely with the diffuser too. $215 for the diffuser, $225 for the front lip, please reply/pm.