Borla 05-09 Mustang 4.0L V6 AT/MT RWD 2dr SS Exhaust (rear section only)

Starting with the bright chrome on T-304 stainless steel tip, this Borla axle-back exhaust system is built for your 2005-2009 Ford Mustang with the 4.0L V6 engine. Borla uses CNC mandrel-bent tubing, which helps maintain the pipe's diameter through bends, allowing for better exhaust flow compared to stock. This system is designed to connect to your factory mid-pipe, making it a straightforward bolt-on upgrade.

The S-Type system is tuned to give your Mustang a more exciting sound and a noticeable bump in power. Borla claims a significant increase in airflow, over 346cfm more than stock, which contributes to double-digit horsepower gains. The system is constructed from aircraft-grade T-304 stainless steel, which is known for its durability and resistance to corrosion, especially compared to aluminized steel. This material choice also helps keep the weight down, with Borla stating it's over a third lighter than the original equipment.

This axle-back system includes a large 4-inch round, rolled, angle-cut tip that exits with a polished finish. Borla backs this exhaust with a Million-Mile Warranty, reflecting their confidence in the product's longevity.