I just recived my RLS exhaust for my 2011 RSS. I was disapointed in the quality control of this muffler. I ordered the chrome one and when it arrived there was welding slag where the spring clips were atteathed, there was a grinder mark about the size of a quarter on the body of the muffler, and lastly the weld on the body of the muffler to the mid pipe was very poor. I think I can fine a better slip on for my $290.00. When I emailed these concern to Ricki at RLS, his response was"If you don't like it send it back, that is the quality you can expect for the price" So much for good customer service. I don't recommend this product to anyone.