This is the exhaust i had on my 128i, by far the best exhaust setup i had on my car, previous setup was a berk 135i muffler delete which was loud and raspy, this one was the best no drone at all on the highway, This setup is very easy to install all you need to get is four exhaust clamps and that's it as i will be throwing in the exhaust reducer couplar as the 128i midpipe is a smaller diameter than the 135.
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