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Upon the release of the 440i, it became instantly recognizable that the exhaust note from the mighty 3.0 turbo had fallen below the levels of expectation from owners looking for ..

The Powervalve REV III Cat-back SPORT exhaust for the 340i / 440i B58 provides you with a perfectly balanced sports tone both externally and internall..

The Powervalve REV III Turbo-back (with 100 Cell Cat) SPORT exhaust for the 340i m Sport / 440i M Sport B58, provides you with a perfectly balanc..