For sale is one new/never used Evolution Raceworks downpipe for an N20 Engine. This should fit the following models: 2011+ 528i, 2011+ X1 s/xDrive28i, 2012+ X3 xDrive28i/xDrive28i or 2011+ Z4 sDrive28i.
This down pipe also has the thermal coating on it which would retail for about $630 and you'd have to wait for production and the coating. This is available to ship as soon as payment is received.
Please contact me with any other questions.