Remus Exhaust E70
Remus Exhaust system for E70 X5 model.
Remus Part # 089307 1549
Fits all 3.0 and 4.8 models
Will also fit 2011 LCI model with extra Y pipe from Remus...
$900 shipped
$800 pickup

This was on my X5 for only 1 month. It gives nice power, and the sound is subtle only a 3-5db increase. If you would like it to be louder the resonators can be removed to make it more aggressive. Complete bolt on system.
Only selling because I had to purchase a different exhaust to accommodate my X5M bumper..