Found It Cheaper? Use Our Atlus Price Guarantee!

Borla Axle-Back Exhaust System for 2005-2009 Ford Mustang (4.0L / V6-4.0L) - 11751

$499.99 $559.99
-11%
In stock

This product will be available soon, but you can pre-order now to get on the list before others!

US Based Support - In Florida

30 Days Satisfaction Guarantee

Price Match

Easy Financing

Borla Axle-Back Exhaust System for 2005-2009 Ford Mustang (4.0L / V6-4.0L) - 11751
$499.99 $559.99
$499.99 $559.99

Fits 2005-2009 Ford Mustang Base (4.0L / V6-4.0L).

Improve the exhaust flow and acoustic profile of your 4.0L Mustang with this Borla Axle-Back exhaust system. Engineered as a direct bolt-on upgrade, this rear-section-only system replaces the restrictive factory muffler to provide a significant increase in airflow and a deeper, more aggressive tone without the weight of the OEM components. Constructed from aircraft-grade T-304 stainless steel, it is designed to withstand corrosion and heat while delivering long-term performance gains.

This system utilizes 2.5-inch CNC mandrel-bent tubing to maintain consistent diameters through every bend, eliminating backpressure. Testing shows an impressive flow rate of 724cfm, a 346cfm increase over the stock unit. The exhaust exits through a large 4-inch round, rolled, angle-cut tip featuring an embossed Borla logo and a bright chrome finish. At approximately one-third lighter than the factory system, this upgrade offers a tangible improvement in power-to-weight ratio and fuel efficiency.

  • Material: High-quality T-304 stainless steel construction
  • Tubing Diameter: 2.5-inch CNC mandrel-bent piping
  • Tip Specification: 4-inch round, rolled, angle-cut embossed chrome tip
  • Flow Rating: 724cfm (346cfm increase over stock)
  • Installation: Easy bolt-on design to factory mounting points
  • Manufacturer Part Number: 11751
  • Warranty: Million-Mile Warranty
🔧 Fitment & Compatibility
Year Make Model Submodel
2005-2009 Ford Mustang Base

Authencity Guaranteed

We only sell authentic products from verified brand partners and retail partners globally.

  • Visa
  • Mastercard
  • PayPal
  • American Express
  • Discover
  • Apple Pay
  • Google Pay

Can’t Find the Part You Need?

Our catalog represents only a portion of the automotive products available through our supplier network. If you cannot find a specific part, brand, or application on our website, submit a request below, and our team will help source it for you.

Please include as much information as possible, such as your vehicle's year, make, model, trim, engine, desired brand, or part number, to help us quickly identify the correct product.

Email is invalid

Image alt