2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Downpipes

Upgrading the restrictive factory downpipe found on your 2020-2025 GM 6.6L Duramax L5P is one of the easiest ways to enhance the sound and performance of your rig. At Alligator Performance, we offer a variety of aftermarket downpipe kits that offer a simple solution to boost your truck’s power, torque, and fuel economy while delivering an aggressive new exhaust tone that will be sure to command attention around every corner.  GM Duramax Fitments: 2020, 2021, 2022, 2023, 2024, 2025 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments. 

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Wehrli 100129 3.5 inch Down Pipe | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100129 3.5 inch Down Pipe | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100129 3.5 inch Down Pipe | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100129 3.5 inch Down Pipe | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100129 3.5 inch Down Pipe | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100129 3.5 inch Down Pipe | 2017-2025 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

$324.95
PPE 117000800 3.5-inch 304 Stainless Steel Down Pipe | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 117000800 3.5-inch 304 Stainless Steel Down Pipe | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 117000800 3.5-inch 304 Stainless Steel Down Pipe | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 117000800 3.5-inch 304 Stainless Steel Down Pipe | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 117000800 3.5-inch 304 Stainless Steel Down Pipe | 2017-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

$197.99

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2020-2025 6.6L Silverado & Sierra 2500HD/3500HD

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