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

Enhance the overall sound of your 2020-2025 GM 6.6L Duramax L5P with our selection of universal mufflers at Alligator Performance! These mufflers are designed to replace your stock system, offering improved exhaust flow, reduced backpressure, and a more aggressive exhaust note. Whether you want a deep, throaty growl or a subtle performance tone, these universal mufflers can help you achieve the sound you’re after while slightly boosting horsepower and torque. Pair them with a Single-Exit Kit or Dual-Exit Kit for a fully customized exhaust system that meets your performance and style goals for your GM 2500HD/3500HD. 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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MBRP GP220022 5 in ID Inlet/Outlet 31 in Exhaust Pipe Single Muffler Aluminized Steel | Universal
MBRP GP220022 5 in ID Inlet/Outlet 31 in Exhaust Pipe Single Muffler Aluminized Steel | Universal

MBRP Exhaust

MBRP GP220022 5 in ID Inlet/Outlet 31 in Exhaust Pipe Single Muffler Aluminized Steel | Universal

Price
$114.99
MBRP M2220A Quiet Tone Exhaust Muffler 5 inch Aluminized Steel | Universal
MBRP M2220A Quiet Tone Exhaust Muffler 5 inch Aluminized Steel | Universal

MBRP Exhaust

MBRP M2220A Quiet Tone Exhaust Muffler 5 inch Aluminized Steel | Universal

Price
$249.99
MBRP MDA30 Aluminized Muffler Bypass Pipe with 4 Inlet/Outlet | Universal
MBRP MDA30 Aluminized Muffler Bypass Pipe with 4 Inlet/Outlet | Universal

MBRP Exhaust

MBRP MDA30 Aluminized Muffler Bypass Pipe with 4 Inlet/Outlet | Universal

Price
$69.99
MBRP MDA531 Muffler Bypass Pipe with 5 inch Inlet/Outlet | Universal
MBRP MDA531 Muffler Bypass Pipe with 5 inch Inlet/Outlet | Universal

MBRP Exhaust

MBRP MDA531 Muffler Bypass Pipe with 5 inch Inlet/Outlet | Universal

Price
$79.99
MBRP MDA36 4 inch Muffler Delete Pipe | Universal
MBRP MDA36 4 inch Muffler Delete Pipe | Universal

MBRP Exhaust

MBRP MDA36 4 inch Muffler Delete Pipe | Universal

Price
$64.99
MBRP M20681 Muffler 4 inch Inlet /Outlet 24 inch Body 30 inch Overall Aluminized Steel | Universal
MBRP M20681 Muffler 4 inch Inlet /Outlet 24 inch Body 30 inch Overall Aluminized Steel | Universal

MBRP Exhaust

MBRP M20681 Muffler 4 inch Inlet /Outlet 24 inch Body 30 inch Overall Aluminized Steel | Universal

Price
$169.99
MBRP MDS30 4 inch Muffler Bypass Pipe | Universal
MBRP MDS30 4 inch Muffler Bypass Pipe | Universal

MBRP Exhaust

MBRP MDS30 4 inch Muffler Bypass Pipe | Universal

Price
$129.99
MBRP R2009 4 inch Muffler Exhaust Resonator | Universal
MBRP R2009 4 inch Muffler Exhaust Resonator | Universal

MBRP Exhaust

MBRP R2009 4 inch Muffler Exhaust Resonator | Universal

Price
$159.99
MBRP MDS9531 XP Series T409 Stainless Steel Muffler Bypass 5 inch Inlet/Outlet 31 inch | Universal
MBRP MDS9531 XP Series T409 Stainless Steel Muffler Bypass 5 inch Inlet/Outlet 31 inch | Universal

MBRP Exhaust

MBRP MDS9531 XP Series T409 Stainless Steel Muffler Bypass 5 inch Inlet/Outlet 31 inch | Universal

Price
$149.99
MBRP M2220S T409 Stainless Steel Quiet Tone Exhaust Muffler 5 inch Inlet | Universal
MBRP M2220S T409 Stainless Steel Quiet Tone Exhaust Muffler 5 inch Inlet | Universal

MBRP Exhaust

MBRP M2220S T409 Stainless Steel Quiet Tone Exhaust Muffler 5 inch Inlet | Universal

Price
$324.99
MBRP GP290022 5 in ID Inlet/Outlet 31 in Exhaust Pipe Single Muffler T409 Stainless Steel | Universal
MBRP GP290022 5 in ID Inlet/Outlet 31 in Exhaust Pipe Single Muffler T409 Stainless Steel | Universal

MBRP Exhaust

MBRP GP290022 5 in ID Inlet/Outlet 31 in Exhaust Pipe Single Muffler T409 Stainless Steel | Universal

Price
$154.99
MBRP MDS930 XP Series Muffler Bypass Pipe 4 inch Inlet/Outlet | Universal
MBRP MDS930 XP Series Muffler Bypass Pipe 4 inch Inlet/Outlet | Universal

MBRP Exhaust

MBRP MDS930 XP Series Muffler Bypass Pipe 4 inch Inlet/Outlet | Universal

Price
$94.99

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

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