Megan's axle back exhaust system is a good and easy way to add performance and looks to your BMW E70 X5 Series SUV. Designed to replace the stock unit, this axle-back system works in conjunction with the OEM Mid-Pipe. Constructed of T-304 Stainless Steel and polished to a mirror finish, this Axle-Back system offers free-flowing performance over your OEM restrictive exhaust system and offering a sportier exhaust note. Being constructed of Stainless-Steel, this exhaust piece is much more lighter than your OEM system and offers increased Power:Weight ratio that plays an important role in the handling and performance of your vehicle. Specifications & Features: APPLICATION: BMW E70 X5 2007+ V6 Model Only (Exclude M Package) -3" pipping to midpipe, 2.5" piping to muffler and tips -Dual 3.5" Burnt Rolled Tips design -Professional installation, cutting and welding required