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Continue shopping2001-2007 Duramax 4" Downpipe Back Exhaust - No Muffler (DDC-4GM01)
Sale price
$1,960.00
Regular price
Regular price
$1,960.00
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.
2001-2007 Duramax 4" Downpipe Back Exhaust - No Muffler (DDC-4GM01)
Sale price
$1,960.00
Regular price
Regular price
$1,960.00
Unit price
Dirty Diesel Customs
Art: DDC-4GM01
Vehicle Fitment
Set your vehicle
Fits
- Chevrolet Silverado 2500 / 2500HD2001–2007
- Chevrolet Silverado 3500 / 3500HD2001–2007
- GMC Sierra 2500 / 2500HD2001–2007
- GMC Sierra 3500 / 3500HD2001–2007
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 |
| 2001-2007 |
GM |
LBZ, LLY, & LB7 6.6L Duramax |
Note: Our exhausts fit all wheelbases and cab configurations unless otherwise noted.
The DDC-4GM01 4" downpipe back race exhaust system for 2001-2007 Duramax trucks replaces the restrictive OE setup with a high-flow straight pipe design built for track performance. This muffler-free kit includes all necessary clamps, pre-welded contour bent hangers, and reinforced flanges for a smooth, hassle-free install. Expect aggressive sound, improved torque, faster throttle response, and optimized diesel performance.
Part Number: DDC-4GM01
Features
- 4" Downpipe Back Exhaust
- Stainless Steel Construction
- Single Side Exit Design
- No Muffler Included
- Easy OE Hanger Installation