Taken from my 2007 S4 cab, having only covered 40k miles. In excellent condition, only removed due to fitting of a non res cat back Milltek. Unlike the RS4 systems that come up quite reguarly on the bay, these dont! Not sure what other models it will fit ie saloon, avant, but like the title states, it is twin exit with quad tips. Due to the size (in one peice from cat back) and weight, am afraid its for collection only. Am based in the North East of England.
Feel free to contact me on 07706 542464 or pm me.