I know this is an old thread but just FYI the mid section exhaust for an N54 weighs 29lbs And the rear muffler section weighs 28lbs. I can weigh the factory downpipes as well if anyone would like.
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-'09 135i MT - 6466 ST - 690whp
-'13 C63 AMG
-'97 318is - sold
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