2020-2026 GM / Chevy Duramax 6.6L L5P
Showing all 13 results
Sort:
14%
3%
31%
EGR Delete | GM Duramax Diesel L5P 2020-2025
Original price was: $429.$299Current price is: $299. In Stock
11%
24%
L5P 3.5″ Down-pipe 2020-2025 GM Duramax
Original price was: $467.$357Current price is: $357. In Stock
Add a review
DieselBro.com
Your review
* Review is required
Name
* Name is required
Email
* Email is required
* Please confirm that you are not a robot
| 5 star | 43% | |
| 4 star | 57% | |
| 3 star | 0% | |
| 2 star | 0% | |
| 1 star | 0% |
1-5 of 21 reviews
Disclaimer: Products sold by DieselBro.com are for off-road and
competition use only. It is not legal to use on public roads or
emissions-regulated vehicles. Learn more: Legal Disclaimer
competition use only. It is not legal to use on public roads or
emissions-regulated vehicles. Learn more: Legal Disclaimer
© 2026 DieselBro. All rights reserved.
The team went above and beyond to make sure I received my order. Easily one of the best customer service experiences I’ve had in years.
Completely satisfied.
The muffler is compact, flows well, has a deep tone, and produces no drone at highway speeds.
Muffler eliminated cab drone while keeping a strong exhaust note. Good balance for daily driving.
The Optimal Flow 5-inch muffler arrived quickly and looks well made. It seems like a good balance to keep noise reasonable when towing. Planning to pick up the remaining components soon.