Aftermarket 6series exhaust muffler for sale

[StashxFutura]

Hi to all 6series owner,currently i have a set of aftermarket exhaust customised from Germany.Is loud and nice bassy sound when u step on the accelerator but it can also be quiet when u r cruising.So not much problem with the authority.So far have been using for more than 2years and have no problem on the road.No welding required.Direct bolt on.No alteration to the current bumber required too.CHeers.PM to discuss.I will get back asap.Thanks

 

[ACS6]

Re: Aftermarket 6series exhaust muffler for sale

Hi Stash. Your 6er's a 630i or 650i? Or 645ci?

Cat back system? Diameter of pipe? No alterations to factory bumper required? Oval tips?

Any dyno charts for hp gains?

Think most 6er owners are not just into sound, functionality is equally important. think my questions are ok to answer via forum.