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Continue shopping2017-2019 Duramax 5" Downpipe Back Exhaust - No Muffler (DDC-5GM17)
Sale price
$1,895.00
Regular price
Regular price
$1,895.00
Unit price
Tax included.
Shipping calculated at checkout.
Off-road and competition use only
Not for use on road-registered vehicles. Removing or modifying emissions equipment on a registered vehicle is illegal in Australia.
2017-2019 Duramax 5" Downpipe Back Exhaust - No Muffler (DDC-5GM17)
Sale price
$1,895.00
Regular price
Regular price
$1,895.00
Unit price
Dirty Diesel Customs
Art: DDC-5GM17
Vehicle Fitment
Set your vehicle
Fits
- Chevrolet Silverado 2500 / 2500HD2017–2019
- Chevrolet Silverado 3500 / 3500HD2017–2019
- GMC Sierra 2500 / 2500HD2017–2019
- GMC Sierra 3500 / 3500HD2017–2019
Before you order
Not sure it fits? Ask us.
Send your year, model and engine. We'll confirm the part number before you buy.
Pay later
Afterpay & Zip
Split it into instalments
Delivery
Australia-wide
Usually 3–7 business days
Genuine
US & Canadian brands
Not copies or knock-offs
Support
Real people, no bots
20+ years fitting this gear
Aussie owned. 25 years in the auto trade.
About us
Normally ships within 3–8 business days
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!