Hi! I wanted to do cutouts on my rear bumper to have magnaflow quad exhaust. For those who have done this, please give me the part number of the magnaflow xpipe, muffler, and quad tips. What size of piping should also be used. Thanks a lot guys.

 

14816 is magnaflow tips i believe.. a fe people have also been doint two resonators. one of each end of the x pipe to tips.
i think this is my plan. there are a handful of good threads on this.

 

2 x Magnaflow 10425 - $56.51 & free shipping
1 x Magnaflow 11385 - $76.50 & free shipping

1 x Bracket #18307521388 - $14
1 x Rubber Mounting #18207578238 - $13

Then pick out some exhaust tips and you're good to go. You should really read this entire thread though:

https://5series.net/forums/e60-parts...fiction-98557/

 

Not sure when you say cutouts, are you going to get a saw and like cut this area out? Wasn't sure if you have already a M5 bumper, then obviously you have them, or if you have MTech, in which you can replace the diffuser. I just order my diffuser so getting stoked about this! I just can't imagine someone actually cutting their bumper with a saw to add this. It would have to look horrible and be very clear what was done. You can get a aftermarket bumper for around 300 and it has the cutouts molded in and looks like someone washed out of med school and was planning on taking a new career...

 

Here is the link
BMW E60 M Tech Fiber Glass FRP Rear Bumper Diffuser | eBay

 

I'm keeping the original rear bumper which has the existing tips. Im making another cutout on the opposite side to have quad tips.

 

Is the magnaflow 11385 same as the xpipe? Thanks

 

Well make sure you take a few good pics, I'm sure we all would like to see the end result.