Gibson Superflow Mufflers

4.48 out of 5 stars 27 Customer Reviews

Gibson Superflow mufflers exceed the performance advantages provided by most other mufflers on the market. With their straight-through design, they're quieter in the cab, while still delivering that "big block" sound at the tailpipe. These exhausts are cost-effective, reliable, and provide more useable pulling power and torque. Superflow mufflers are available in steel and stainless steel—in a variety of shapes, and inlet/outlet diameters and quantities for universal and vehicle-specific applications.

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Gibson Superflow 304 Stainless Steel 4 Inch Muffler 788040S

Gibson Superflow 304 Stainless Steel 4 Inch Muffler 788040S

Muffler, Superflow, 4.00 in. Inlet/4.00 in. Outlet, Stainless Steel, Polished, Each

Part Number: GIB-788040S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.5 Inch Muffler 55142S

Muffler, Superflow, Oval, Stainless, Single 2.5 in. Offset Inlet, Single 2.5 in. Center Outlet, 19 in. Length

Part Number: GIB-55142S

Not Yet Reviewed

Estimated Ship Date: Today

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Gibson Superflow 304 Stainless Steel 3 Inch Muffler 421887

Muffler, Superflow, Offset 3.00 in. Inlet/Outlet, Round 24 in. Case, Polished Stainless Steel, Each

Part Number: GIB-421887

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Gibson Superflow 304 Stainless Steel 3 Inch Muffler 55109S

Muffler, Superflow, Oval, Stainless, Dual 3.0 in. Offset Inlet, Dual 3.0 in. Offset Outlet, 18 in. Length

Part Number: GIB-55109S

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Gibson Superflow 304 Stainless Steel 2.5 Inch Muffler 758250S

Muffler, Superflow, Dual 2.50 in. Inlets/3.00 in. Outlet, Stainless Steel, Polished, Each

Part Number: GIB-758250S

Not Yet Reviewed

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 3 Inch Muffler 55153S

Muffler, Superflow, Single 3.00 in. Inlet/Single 3.00 in. Outlet, Stainless Steel, Natural, Each

Part Number: GIB-55153S

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.5 Inch Muffler 55192S

Muffler, Superflow, Single 2.50 in. Inlet/Single 2.50 in. Outlet, Stainless Steel, Natural, Each

Part Number: GIB-55192S

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Gibson Superflow 304 Stainless Steel 3 Inch Muffler 788050S

Muffler, Superflow, Two 3 in. Inlets/Two 4 in. Outlets, 30 in. Length, Stainless Steel, Polished, Each

Part Number: GIB-788050S

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.25 Inch Muffler 55105S

Muffler, Superflow, Oval, Stainless, Natural, Dual 2.25 in. Offset Inlet/Outlet, 24 in. Length, Each

Part Number: GIB-55105S

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Gibson Superflow 304 Stainless Steel 3.5 Inch Muffler 758350S

Muffler, Superflow, 3.50 in. Inlet/Dual 3.00 in. Outlets, Stainless Steel, Polished, Each

Part Number: GIB-758350S

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.5 Inch Muffler 788200S

Muffler, Superflow, 2.50 in. Inlet/2.50 in. Outlet, Stainless Steel, Polished, Each

Part Number: GIB-788200S

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 3 Inch Muffler 758300S

Muffler, Superflow, 3.00 in. Inlet/Dual 2.25 in. Outlets, Stainless Steel, Polished, Each

Part Number: GIB-758300S

Not Yet Reviewed

Estimated Ship Date: Today

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Gibson Superflow 304 Stainless Steel 2.5 Inch Muffler 55106S

Muffler, Superflow, Dual 2.50 in. Inlets/Dual 2.50 in. Outlets, Stainless Steel, Each

Part Number: GIB-55106S

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Gibson Superflow 304 Stainless Steel 2.5 Inch Muffler 788705S

Muffler, Superflow, 2.50 in. Inlet/3.00 in. Outlet, Stainless Steel, Natural, Each

Part Number: GIB-788705S

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.5 Inch Muffler 55172S

Muffler, Superflow, Single 2.50 in. Inlet/Single 2.50 in. Outlet, Stainless Steel, Natural, Each

Part Number: GIB-55172S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 3 Inch Muffler 55189S

Muffler, Superflow, Single 3.00 in. Inlet/Dual 2.50 in. Outlets, Stainless Steel, Aluminized, Each

Part Number: GIB-55189S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.5 Inch Muffler 758216S

Muffler, Superflow, 2 1/2 in. Inlet/Dual 1 3/4 in. Outlets, Stainless Steel, Polished, Each

Part Number: GIB-758216S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.25 Inch Muffler 788700S

Muffler, Superflow, 2.25 in. Inlet/2.25 in.. Outlet, Stainless Steel, Polished, Each

Part Number: GIB-788700S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.25 Inch Muffler 55184S

Muffler, Superflow, Oval, Stainless, Single 2.25 in. Center Inlet, Dual 2.25 in. Offset Outlet, 19 in. Length

Part Number: GIB-55184S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 3 Inch Muffler 55108S

Muffler, Superflow, Oval, Stainless, Dual 3.0 in. Offset Inlet, Dual 2.5 in. Offset Outlet, 24 in. Length

Part Number: GIB-55108S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 3 Inch Muffler 55193S

Muffler, Superflow, Single 3.00 in. Inlet/Single 3.00 in. Outlet, Stainless Steel, Natural, Each

Part Number: GIB-55193S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 3 Inch Muffler 758219S

Muffler, Superflow, 3.00 in. Inlet/Dual 2.00 in. Outlets, Stainless Steel, Natural, Each

Part Number: GIB-758219S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.25 Inch Muffler 55121S

Muffler, Superflow, Single 2.25 in. Inlet/Single 2.25 in. Outlet, Stainless Steel, Natural, Each

Part Number: GIB-55121S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 2.5 Inch Muffler 788702S

Muffler, Superflow, 2.50 in. Inlet/3.00 in. Outlet, Stainless Steel, Polished, Each

Part Number: GIB-788702S

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

Gibson Superflow 304 Stainless Steel 3 Inch Muffler 789800S

Muffler, Superflow, 3.00 in. Inlet/Dual 2.50 in. Outlets, Stainless Steel, Polished, Each

Part Number: GIB-789800S

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

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