yap, they are suppose to be for 2011 or newer S63 or something along those lines, the stock exhaust added a slip on flange after the two bolt and the downpipes that uses the slip on design is a little longer. However, this is rather pointless since the 2 bolt still works just fine on the newer year car, and if you want to pair with a full exhaust like Akra, you must use the 2 bolt style
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