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2011-2019 Powerstroke 4" Downpipe Back Dual Exhaust System - No Muffler (421005 / 422005)

Flo-Pro Mft Part Number: 753NB-421005
$1,280.00 CAD
Material
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Truck Fitment

Description
Flo-Pro Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.
The 421005 & 422005 is a 4" downpipe back dual exhaust system by Flo-Pro for the 2011-2019 Ford 6.7L. It replaces your restrictive OE exhaust system from the downpipe back with a 4" mandrel-bent dual exhaust system. Just like all of Flo-Pro Manufacturings Exhaust kits, it will come with all the required clamps, pre-weld contour bent hangers, and stronger flanges to help you cruise through the installation process. The 753NB does not include a muffler and is intended for the track driven 6.7's! This kit not only sounds great but will improve the torque, mileage, and throttle response on your 6.7L!

Part Number: 421005 & 422005

Features
  • 4" Downpipe Back
  • Dual Exhaust System
  • No Bungs or Muffler
  • Aluminized Steel & Stainless Steel Options

Stainless vs Aluminized

Aluminized steel is the budget-friendly choice. It has a protective coating that holds up well, but once that coating wears it will eventually rust through, especially in salted winter climates. The stainless option is T409 stainless, an automotive-grade steel built to resist rot, and it will typically outlast the truck. T409 is not polished show-grade stainless, so light surface rust or discoloration can still show up over time. That is cosmetic only and won't affect performance or service life.

Notes
  • Fits Automatic F-250/F-350 ONLY
  • Will NOT fit Regular Cab trucks
  • Minor Modifications may be required to run the dual pipe kits on trucks with a suspension lift or airbags

Questions and Answers

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Vehicle Fitment - Part No: 421005

Product Fitment Notes
  • Fits automatic-transmission models only.
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