Exhaust Systems

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Homepage Banner displaying End of year Sale 5 percent Off on all kits.

Exhaust Systems

Technical Summary

High-flow competition exhaust systems designed for Ford Powerstroke, Ram Cummins, GM Duramax, Mercedes Sprinter, and Nissan Cummins engines. Systems are available in turbo-back and downpipe-back configurations to maximize exhaust flow, improve turbo response, and deliver an aggressive diesel tone. All products are categorized by engine model and vehicle year for precise, reliable fitment.

Engineering and Design Advantage

Maximum Flow: Features 4" and 5" mandrel-bent piping to reduce backpressure and enhance mid-range to top-end power.

Faster Spool, Lower EGTs: Optimized exhaust routing improves turbo scavenging and reduces exhaust gas temperatures under heavy load.

Distinctive Sound: Produces an aggressive diesel tone; available in straight-pipe or muffled configurations.

Precision Fitment: Uses direct bolt-on installation with factory-style hangers and brackets.

Rugged Construction: Made from T409 or T304 stainless steel for superior corrosion and high-temperature resistance.

Collection Includes

Ram Cummins

  • 6.7L Down-pipe Back Competition Exhaust (2013–2018)
  • 6.7L 4" Downpipe-Back Stainless Exhaust System (2019–2024)
  • 6.7L Downpipe-Back Exhaust System (2019–2024)
  • 6.7L Turbo-Back Race Exhaust w/o Muffler (2007.5–2012)
  • 6.7L C&C 5" Turbo-Back Race Exhaust System (2011–2018)

Ford Powerstroke

  • 6.7L 5" Downpipe-Back Race Exhaust (2011–2022)
  • 6.7L 4" Downpipe-Back Race Exhaust (2011–2024)
  • 6.7L 4" Downpipe-Back Stainless Exhaust System (2011–2025)
  • 6.4L 4" Downpipe-Back Exhaust System (2008–2010)
  • 6.0L Turbo-Back Race Exhaust System (2003–2007)
  • 7.3L 5" Turbo-Back Race Exhaust (1999–2003)

GM Duramax

  • L5P Down-pipe Back Race Exhaust System (2017–2023)
  • L5P 4" Down-pipe Back Race Exhaust (2017–2023)
  • LML Down-pipe Back Race Exhaust (2015.5–2016)
  • 6.6L Downpipe-Back Race Exhaust (2011–2015)
  • 6.6L Down-pipe Back Race Exhaust (2001–2007)
  • LMM 4" Down-pipe Back Exhaust (2007.5–2010)
  • LM2 Cat & DPF Race Pipe (2020–2022)
  • Canyon/Colorado LWN 3" Turbo-Back Race Exhaust (2016–2021)

Mercedes Sprinter

  • 3.0L 3" DPF Delete Performance Exhaust (2010–2018)
  • 3.0L 3" DPF Delete Parts Kit (2010–2025)

Nissan Cummins

  • 5.0L Race Exhaust w/ Muffler (2016–2018)

Mufflers & Components

  • Stainless Steel Diesel Muffler T409 4" Diesel Muffler

Key Performance Specifications

Diameters: 4" and 5" systems specific to each application.

Construction: T409/T304 stainless steel, mandrel-bent tubing.

Configuration: Turbo-back and downpipe-back exhaust layouts.

How to Find the Correct System

  1. Match your engine and exact model year with the product title.
  2. Select a turbo-back or downpipe-back layout.
  3. Choose between 4" and 5" diameter, and select a muffler or straight-pipe option.