Need more performance, MPG, and sound from your 2018-2021 Expedition? Look no further! All of SPD’s catted downpipes use the highest grade catalytic converters and larger 3″ diameter mandrel bent tubing, improving throttle response, mileage, and overall performance while reducing turbo lag and exhaust temperatures. Our downpipes do not require custom tuning and can be used as a factory downpipe replacement. Our catalytic converters are made in the USA and are designed to be used in racing applications.

On all SPD Performance’s aluminized catted downpipes, you get:

• Increase in performance
• Improved turbo spool time
• Better fuel mileage
• High-flow catalytic converters that do not cause check engine lights
• High temp silica ceramic coated for a long life span
• Factory-style flanged clamps on all flared turbo and exit connections
• High-grade clamps for a solid seal and no leaks
• All hardware included

We use EPA-approved federal catalytic converters, but you are responsible for verifying that they are legal with your state and county laws.

We’ve got your back!

Function Factory Performance takes “customer service” very personally. We understand that finding the right parts can be overwhelming. Education and awareness are the principles that keep us ahead of the curve. Let us make this experience simple, easy, and awesome, so without hesitation give us a call at (480) 576-8606, feel free to direct message on our live chat or CLICK HERE to contact us via email.

Make sure to follow us on Instagram: @FFPerformanceAZ and Youtube.

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