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Flowmaster Exhaust: Mufflers, Systems, Tips & More

Flowmaster Exhaust: Mufflers, Systems, Tips & More

For over 25 years, the Flowmaster tone has been thundering through streets and on tracks around the world! Housed in two state-of-the-art facilities, Flowmaster uses...

For over 25 years, the Flowmaster tone has been thundering through streets and on tracks around the world! Housed in two state-of-the-art facilities, Flowmaster uses premium materials along with extensive research and design to produce advanced, dyno-tuned exhaust systems and components that deliver power gains with an unmistakable sound. Some of the most distinct exhaust systems include the Flowmaster 40 Series and American Thunder mufflers, but there are plenty more choices—whether you want your ride to sound wild or mild, Flowmaster has the high performance exhaust parts you need.

For over 25 years, the Flowmaster tone has been thundering through streets and on tracks around the world! Housed in two state-of-the-art facilities, Flowmaster uses premium materials along with extensive research and design to produce advanced, dyno-tuned exhaust systems and components that deliver power gains with an unmistakable sound. Some of the most distinct exhaust systems include the Flowmaster 40 Series and American Thunder mufflers, but there are plenty more choices—whether you want your ride to sound wild or mild, Flowmaster has the high performance exhaust parts you need.

Individual Parts

Results 1 - 25 of 243

Muffler, American Thunder 40 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-42541

4.74 out of 5 stars ( 86 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, FlowFX Series, 2.5 in. Inlet, 2.5 in. Outlet, 409 Stainless Steel, Natural Finish, Each

Part Number: FLO-71226

4.8 out of 5 stars ( 75 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, FlowFX Series, 2.5 in. Inlet/2.5 in. Outlet, Stainless Steel, Natural, Round Body, Each

Part Number: FLO-71416

4.75 out of 5 stars ( 63 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Delta Flow 50 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-942551

4.84 out of 5 stars ( 37 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, FlowFX Series, 3 in. Offset Inlet/3 in. Center Outlet, Reversible, Stainless Steel, Natural, Each

Part Number: FLO-71229

4.59 out of 5 stars ( 69 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Flowmaster 40 Series, 3 in. Offset Inlet/3 in. Center Outlet, Steel, Black, Each

Part Number: FLO-43041

4.83 out of 5 stars ( 47 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Super 10 Series, 2.5 in. Inlet/2.5 in. Outlet, Stainless Steel, Black, Each

Part Number: FLO-842515

4.85 out of 5 stars ( 111 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Mufflers, FlowFX, Round Case, Stainless Steel, Natural, Single 3.00 in. Center Inlet/Outlet, 20.000 in. Overall Length, Each

Part Number: FLO-71419

4.76 out of 5 stars ( 38 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, 40 Series, 2 1/2 in. Offset Inlet, 2 1/2 in. Offset Outlet, Chambered, Steel, Black, Each

Part Number: FLO-42543

4.9 out of 5 stars ( 42 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Super 10 Series, 3.0 in. Center Inlet/3.0 in. Center Outlet, Chambered, Stainless Steel, Black, Each

Part Number: FLO-843015

4.87 out of 5 stars ( 69 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Super 44 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-942546

4.65 out of 5 stars ( 52 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Delta Flow 50 Series, 3 in. Inlet/3 in. Outlet, Steel, Black, Each

Part Number: FLO-943050

4.48 out of 5 stars ( 40 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Super 44 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-942548

4.89 out of 5 stars ( 28 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, 40 Series, 2.5 in. Inlet/Outlet, Center Inlet, Offset Outlet, Aluminized Steel, Black, Each

Part Number: FLO-42542

5.0 out of 5 stars ( 14 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, American Thunder 40 Series, 2 1/4 in. Inlet/2 1/4 in. Outlet, Steel, Black, Each

Part Number: FLO-42441

4.87 out of 5 stars ( 31 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Delta Flow 50 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-942550

4.96 out of 5 stars ( 25 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Stainless Steel, Black, 2.5 in. Inlet/Outlet, 17 in. Length, 4 in. Thick, Each

Part Number: FLO-12512409

4.85 out of 5 stars ( 20 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Delta Flow 50 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Stainless Steel, Black, Each

Part Number: FLO-842551

4.52 out of 5 stars ( 23 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, 2 1/2 in. Inlet/2 1/2 in. Outlet, Stainless Steel, Natural, Each

Part Number: FLO-12518304

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Delta Flow 50 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Stainless Steel, Black, Each

Part Number: FLO-842553

4.63 out of 5 stars ( 19 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, FlowFX Series, 2.5 in. Inlet/2.5 in. Outlet, Stainless Steel, Natural, Each

Part Number: FLO-71236

4.8 out of 5 stars ( 25 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, FlowFX Series, Centered 3.00 in. Inlet/Outlet, Perforated Stainless Tube with Packing Inside, Oval Case, 409 Stainless Steel, Natural, Each

Part Number: FLO-71249

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, Delta Flow 50 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-942553

4.73 out of 5 stars ( 22 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, 2 1/2 in. Inlet/2 1/2 in. Outlet, Stainless Steel, Black, Each

Part Number: FLO-12518409

4.71 out of 5 stars ( 24 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

Muffler, American Thunder 40 Series, 3 in. Inlet/3 in. Outlet, Steel, Black, Each

Part Number: FLO-43043

5.0 out of 5 stars ( 10 )

Estimated Ship Date: Friday 12/26/2025

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Estimated Ship Date: Friday 12/26/2025

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