Needing more performance, MPG's and sound from your 2015 - 2017 Expedition/Navigator? Look no further! All of SPD's catted downpipes use the highest grade EPA approved catalytic converters and larger 3" diameter mandrel bent tubing which improves 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 convertors are made in the USA and are designed to be used in racing applications. 

On all SPD Performance's Aluminized Steel 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 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 to verify that they are legal with your state and county laws.

We will NOT ship this product to California.