FREE 2 or 3-Day Delivery on 10,000+ Items. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$20K Sweeps! 10 Chances to Win! Enter Daily >
The AmericanMuscle Show is Back! Register Now>

XForce 3-Inch Stainless High Flow Catted Downpipe (15-23 Mustang EcoBoost)

Item 405546
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $646.99 You Save 13% ($84.49)
Our Price

$562.50 (kit)

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Improves Horsepower and Torque
      • More Aggressive Exhaust Sound than Stock
      • Includes High-Flow 100-Cell Metallic Catalytic Converter
      • Three-Inch Diameter Down Pipe
      • Mandrel-Bent Stainless Steel Pipe
      • Direct-Fit Bolt-On Only With XForce Cat-Back
      • Will Not Fit OE Cat-Back
      • Cutting May Be Required When Used With Other Aftermarket Cat-Back
      • Intended for Track and Off-Road Use Only
      • Computer Tune Recommended
      • Fits 2015 to 2023 Ford Mustang EcoBoost Models


      Improved Flow for Increased Power. The catted XForce 3-Inch Down Pipe is designed to improve the Mustang's exhaust flow to provide additional horsepower and torque. It features a non-restrictive, mandrel-bent design equipped with a high-flow catalytic converter. Note that this down pipe will not fit the factory cat-back and an XForce cat-back is recommended for direct-fit bolt-on installation.

      More Aggressive Exhaust Sound. The XForce 3-Inch Down Pipe also improves exhaust sound with the increased exhaust flow. The exhaust sound can be further tuned with the use of aftermarket cat-backs.

      Durable Stainless Steel Construction. The XForce 3-Inch Down Pipe is designed and dyno-tested for maximum performance. It features CNC mandrel-bent pipes and high-quality construction for superior performance and style.

      Bolt-On Installation. The XForce 3-Inch Down Pipe uses the factory mounting points for easy installation. However, it's designed to be direct-fit to XForce cat-backs and cutting may be required when used with other aftermarket cat-backs. It will not fit the OE cat-back.

      No Tune Required. The XForce 3-Inch Down Pipe is specially designed to function without a computer tune. However, a tune is highly recommended after modifying the exhaust to ensure optimum performance.

      Not CARB Certified. The XForce 3-Inch Down Pipe is not CARB certified at this time and is not intended for installation or use in California or other states adopting California emission control standards. Note that this down pipe is intended for track and off-road use only.

      Application. The XForce 3-Inch Down Pipe with high-flow catalytic converter is designed to fit 2015 to 2023 Ford Mustang EcoBoost Models.

      Technical Note. This down pipe will not fit the factory cat-back. An aftermarket cat-back is required to complete the installation.



      XForce ES-FM17-KITB

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Down Pipe Assembly
      • Installation Hardware

      Customer Reviews (5)

        Brand Image

        Reviews of XForce Exhaust products have an average rating of 4.3 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • EcoBoost - 15, 16, 17, 18, 19, 20, 21, 22, 23
          • GT - 23
          • Mach 1 - 23

              Related Mustang Categories