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

Name: 2017-2019 Duramax 5" SS Downpipe Back Exhaust System - No Muffler (DDC-5GM17)
Brand: Dirty Diesel Customs
SKU: DDC-5GM17
Price: 970.00 CAD
Availability: InStock

(5)

Dirty Diesel Customs Part Number: DDC-5GM17

$970.00 CAD

Notices

These cannot be shipped to the USA. Learn More

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Truck Fitment

Warranty

Description

Note: Fits all wheelbase and cab configurations unless otherwise noted. These kits will only fit models equipped with the OEM-style 4-bolt flange off the turbo direct pipe!

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.

Why Shop Dirty Exhausts?
When you buy from Dirty Diesel, you’re buying peace of mind. We’ve put in the work to bring you exhaust systems that meet our strict standards for durability and flow. Every kit is vetted for a precision, bolt-on fit, ensuring you get a high-performance system that sounds as good as it performs, without the headache of poor fitment or subpar materials.

Part Number: DDC-5GM17

Features

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

Includes

(1) 5" Stainless Steel Downpipe-Back Exhaust
Heavy-Duty Clamps
Pre-Welded Contour Hangers
Reinforced Flanges

Warranty

We overengineer everything we make. It's manufactured to last and tested to prove it, and if by some strange anomaly it ever lets you down, we'll fix it, have a word with whoever built it, and come back stronger. That's the Dirty Lifetime Warranty. Click here for all the details.

Questions and Answers

Don't see your question? Ask us anything about this product.

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.
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.
So I’m looking at doing the 3.5 inch down pipe that you sell along with a 5 inch exhaust. Will they bolt together and work or not? And how big is the box that the exhaust comes in?

Our downpipe will work with the 5" Exhaust yes, it's a factory replacement which any exhaust kit will bolt to. The 5" Exhaust kit is about 30" x 18" x 60" roughly.
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