I have a 135i muffler for sale that I'm willing to ship (on buyers dime). Just the muffler without the axle back pipe that connects to the resonator. Black tips. This is a great upgrade for a 128i. Gives a nice deep rumble especially with the golf tee mod. $100 + shipping.
I also have stock 128i exhaust system from the resonator and back. (pickup only) $70 OBO
Pics of 128i exhaust:
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