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2017-2019 Duramax 5" Downpipe Back Exhaust - No Muffler (DDC-5GM17)

Dirty Diesel Customs Part Number: DDC-5GM17
$1,000.00 CAD

Material
Notices
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Description

Fits

Year Make Engine
2017-2019
GM L5P 6.6L Duramax & 4-Bolt Flange

Note: Our exhausts fit all wheelbases and cab configurations unless otherwise noted.

The DDC-5GM17 Downpipe-back exhaust system is designed for 2017-2019 L5P 6.6L Duramax trucks, delivering full high-performance 5" piping to replace all stock components. This complete kit includes clamps, pre-welded contour hangers, and reinforced flanges for a smooth, hassle-free install. Expect improved torque, enhanced flow, lower EGTs, better fuel mileage, and a deeper, aggressive exhaust tone for your 6.6L Duramax.

Part Number: DDC-5GM17

Features

  • 5" Downpipe-back Exhaust
  • Straight Pipe, No Muffler
  • Boosted Torque & Fuel Mileage
  • Durable Stainless Steel
  • Easy, Bolt-On Installation

Additional Information

  • These kits will only fit models equipped with the OEM-style 4-bolt flange off the turbo direct pipe!

Questions and Answers

Previously asked questions

We've compiled a list of questions and answers below.

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  • This doesn’t include down pipe from turbo does it?

    Unfortunately, no.

  • What’s required for tuning after the exhaust system is installed since DPF and DEF won’t be used?

    You need HP Tuners with CCS Tuning and an unlocked ECM for tuning after installing this exhaust system​.

  • Will this system work on a 2021 GMC crew cab 4wd?

    No.

  • Will this kit work for my 2020 crew cab?

    Yes

  • Is this for crew cab or extended cab?

    This will work with all bed and cab configurations!

  • will this connect to the 3.5 inch mbrp downpipe? The downpipe mentioned has a four bolt flange.

    Yes

  • Do you need a tune ? And what tune if so

    You will need a custom delete tune for your L5P so the ECM doesn't search for the missing DPF and throw codes/throw limp mode.