‘03-‘06 Mercedes W220 S 55 S55 AMG - Straight Pipe Exhaust System OEM. Center resonators and rear mufflers have been professionally straight piped. Done very well with no leaks. A great upgrade to give your s55 a bit more rasp, but still crisp and not too crackly or obnoxious while keeping it OEM. I have a video of the engine running with this exhaust for perspective - available upon request. This exhaust system is a direct bolt up to s55 AMG years 2003-2006. Local pickup only. Thanks !