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USD 279.99
Part #: MBFS9459

MBRP FS9459 4" XP Series Turbo Downpipe

2011-2014 Ford 6.7L Powerstroke | 2015 Ford 6.7L Powerstroke Cab & Chassis
Part #: MBFS9459
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The MBRP FS9459 4" XP Series Turbo Downpipe for your 2011-2014 Ford 6.7L Powerstroke is designed to increase flow and power. Built from T409 stainless steel, the XP Series downpipe features a rugged sixteen gauge construction that can be counted on to withstand everything from salt to rocks and tar to grime. MBRP Downpipes are jig manufactured to ensure total accuracy and a perfect fit. 


  • 4" Diameter  
  • T409 Stainless Steel 
  • Mandrel Bent For Increased Flow 
Note: Fits 2011-2014 Pickups, 2015 fitment is on cab & chassis models only.


  • MFG. Number FS9459
  • Manufacturer Name MBRP Inc.
  • Shipping Weight 12.00 lb.
  • Shipping Length 37 in.
  • Shipping Width 16 in.
  • Shipping Height 10 in.
  • Fuel Type Diesel
  • UPC 882963119087
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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Questions and Answers

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Most Popular Questions

What is the difference between this XP Series downpipe and the installer series downpipe?
View Staff Answer 

The “XP Series” is Stainless Steel and the “Installer Series” is Aluminized Steel.

Is this a 2 piece down pipe?
View Staff Answer 
Yes. The MBRP FS9459 4" XP Series Turbo Downpipe has a 2-piece construction.
XDP continues to closely monitor the COVID-19 (Coronavirus) outbreak. As an integral part of the automotive supply chain, at this point all call centers and distribution centers remain fully operational to ensure we keep vital service components flowing to vehicles used in transport of goods and emergency response. To ensure the health of our employees, families, and customers, we have made the following procedural changes:

  • UPDATE: Effective 6/1 Customer Service resumes normal business hours of M-F 8:30 – 9:00pm EST.
  • Effective 3/18 we have decided to temporarily close both of our retail stores in NJ and NV.
  • Our technical sales team remains available Mon-Fri 8:30am-9pm and Saturday 10:30am-7pm EST.
  • All employees have been encouraged to follow the CDC's recommendations at home and in the workplace.
The circumstances of this virus are fast moving, as such, we will continue to update you with any further operational adjustments as needed. As always, we value your business and appreciate your patience as we manage this situation together.
Emissions Notice

This product is not legal for sale or street use in California. Certain aftermarket products are subject to governmental emission standards regulated by the California Air Resources Board. In order for these products to be legal on a specific vehicle in California, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.