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Flowmaster

Flowmaster High-Flow Performance Mufflers

Equip your ride with Flowmaster performance mufflers, a proven choice for classic and modern muscle cars, street rods, heavy-duty towing, and high-performance racing...

Equip your ride with Flowmaster performance mufflers, a proven choice for classic and modern muscle cars, street rods, heavy-duty towing, and high-performance racing applications. Designed for unrestricted exhaust flow, the mufflers deliver real performance gains along with the muscular sound Flowmaster is known for. Multiple high-flow internal designs—including chambered mufflers, exclusive laminar-flow technology, straight-through performance mufflers, and race mufflers—make it easy to outfit your ride with the sound and performance you want. Built from MIG-welded aluminized steel or stainless steel for long-lasting...

Equip your ride with Flowmaster performance mufflers, a proven choice for classic and modern muscle cars, street rods, heavy-duty towing, and high-performance racing applications. Designed for unrestricted exhaust flow, the mufflers deliver real performance gains along with the muscular sound Flowmaster is known for. Multiple high-flow internal designs—including chambered mufflers, exclusive laminar-flow technology, straight-through performance mufflers, and race mufflers—make it easy to outfit your ride with the sound and performance you want. Built from MIG-welded aluminized steel or stainless steel for long-lasting durability, Flowmaster mufflers are available in a wide range of inlet and outlet locations, dimensions, and case configurations. Shop the entire selection of Flowmaster performance mufflers at Summit Racing today.

Showing In Stock Items. Show All 49 Items.

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Results 1 - 25 of 46

Flowmaster FlowFX 409 Stainless Steel 2.5 Inch Muffler 71226

Flowmaster FlowFX 409 Stainless Steel 2.5 Inch Muffler 71226

Flowmaster FlowFX 409 Stainless Steel 2.5 Inch Muffler 71226

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 ( 76 )

Estimated Ship Date: Tomorrow

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Flowmaster FlowFX 409 Stainless Steel 2.5 Inch Muffler 71236

Flowmaster FlowFX 409 Stainless Steel 2.5 Inch Muffler 71236

Flowmaster FlowFX 409 Stainless Steel 2.5 Inch Muffler 71236

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: Tomorrow

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Flowmaster Super 40 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 852546

Flowmaster Super 40 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 852546

Flowmaster Super 40 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 852546

Muffler, Super 40 Series, Oval, Stainless, Offset 2.5 in. Inlet, Center 2.5 in. Outlet, 13.5 in. Case Length

Part Number: FLO-852546

5.0 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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Flowmaster 80 Series Crossflow 409 Stainless Steel 2.5 Inch Muffler 842583

Flowmaster 80 Series Crossflow 409 Stainless Steel 2.5 Inch Muffler 842583

Flowmaster 80 Series Crossflow 409 Stainless Steel 2.5 Inch Muffler 842583

Muffler, 80 Series, Crossflow, 409 Stainless Steel, Single 2.5 in. Offset Inlet, Dual 2.5 in. Offset Outlets, Each

Part Number: FLO-842583

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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Flowmaster Super 40 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 852548

Flowmaster Super 40 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 852548

Flowmaster Super 40 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 852548

Muffler, Super 40 Series, Oval, Stainless, Offset 2.5 in. Inlet/Outlet, 13.5 in. Case Length, Each

Part Number: FLO-852548

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Flowmaster Pro Series Steel 4 Inch Muffler 14020100

Flowmaster Pro Series Steel 4 Inch Muffler 14020100

Flowmaster Pro Series Steel 4 Inch Muffler 14020100

Muffler, Pro Series, 4.0 in. Inlet/4.0 in. Outlet, Steel, Black, 24.0 in. Length, Each

Part Number: FLO-14020100

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

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Flowmaster 40 Series Steel 2.5 Inch Muffler 42541

Flowmaster 40 Series Steel 2.5 Inch Muffler 42541

Flowmaster 40 Series Steel 2.5 Inch Muffler 42541

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

Part Number: FLO-42541

4.75 out of 5 stars ( 87 )

Estimated Ship Date: Tomorrow

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Flowmaster 50 Series Delta Flow Steel 2.5 Inch Muffler 942551

Flowmaster 50 Series Delta Flow Steel 2.5 Inch Muffler 942551

Flowmaster 50 Series Delta Flow Steel 2.5 Inch Muffler 942551

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: Tomorrow

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Flowmaster 40 Series Steel 2.5 Inch Muffler 42543

Flowmaster 40 Series Steel 2.5 Inch Muffler 42543

Flowmaster 40 Series Steel 2.5 Inch Muffler 42543

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: Tomorrow

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Flowmaster Super 44 Series Steel 2.5 Inch Muffler 942546

Flowmaster Super 44 Series Steel 2.5 Inch Muffler 942546

Flowmaster Super 44 Series Steel 2.5 Inch Muffler 942546

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: Tomorrow

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Flowmaster Super 44 Series Steel 2.5 Inch Muffler 942548

Flowmaster Super 44 Series Steel 2.5 Inch Muffler 942548

Flowmaster Super 44 Series Steel 2.5 Inch Muffler 942548

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: Tomorrow

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Flowmaster 40 Series Delta Flow Steel 2.5 Inch Muffler 942541

Flowmaster 40 Series Delta Flow Steel 2.5 Inch Muffler 942541

Flowmaster 40 Series Delta Flow Steel 2.5 Inch Muffler 942541

Muffler, Delta Flow 40 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-942541

4.57 out of 5 stars ( 14 )

Estimated Ship Date: Tomorrow

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Flowmaster 50 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 842551

Flowmaster 50 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 842551

Flowmaster 50 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 842551

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: Tomorrow

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Flowmaster Stainless Steel 40 Series 409 Stainless Steel 2.5 Inch Muffler 8042541

Flowmaster Stainless Steel 40 Series 409 Stainless Steel 2.5 Inch Muffler 8042541

Flowmaster Stainless Steel 40 Series 409 Stainless Steel 2.5 Inch Muffler 8042541

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

Part Number: FLO-8042541

4.27 out of 5 stars ( 15 )

Estimated Ship Date: Tomorrow

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Flowmaster Stainless Steel Super 44 Series 409 Stainless Steel 2.5 Inch Muffler 842548

Flowmaster Stainless Steel Super 44 Series 409 Stainless Steel 2.5 Inch Muffler 842548

Flowmaster Stainless Steel Super 44 Series 409 Stainless Steel 2.5 Inch Muffler 842548

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

Part Number: FLO-842548

4.77 out of 5 stars ( 26 )

Estimated Ship Date: Tomorrow

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Flowmaster Stainless Steel Super 44 Series 409 Stainless Steel 2.5 Inch Muffler 842546

Flowmaster Stainless Steel Super 44 Series 409 Stainless Steel 2.5 Inch Muffler 842546

Flowmaster Stainless Steel Super 44 Series 409 Stainless Steel 2.5 Inch Muffler 842546

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

Part Number: FLO-842546

4.71 out of 5 stars ( 17 )

Estimated Ship Date: Tomorrow

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Flowmaster 40 Series Delta Flow Steel 2.5 Inch Muffler 942543

Flowmaster 40 Series Delta Flow Steel 2.5 Inch Muffler 942543

Flowmaster 40 Series Delta Flow Steel 2.5 Inch Muffler 942543

Muffler, Delta Flow 40 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-942543

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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Flowmaster Super 50 Series Performance Steel 2.5 Inch Muffler 52558

Flowmaster Super 50 Series Performance Steel 2.5 Inch Muffler 52558

Flowmaster Super 50 Series Performance Steel 2.5 Inch Muffler 52558

Muffler, Super 50 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Aluminized, Each

Part Number: FLO-52558

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52573

Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52573

Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52573

Muffler, Big Block II 70 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-52573

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Flowmaster 40 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 842541

Flowmaster 40 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 842541

Flowmaster 40 Series Delta Flow 409 Stainless Steel 2.5 Inch Muffler 842541

Muffler, Delta Flow 40 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Stainless Steel, Black, Each

Part Number: FLO-842541

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Flowmaster Stainless Steel 40 Series 409 Stainless Steel 2.5 Inch Muffler 8042543

Flowmaster Stainless Steel 40 Series 409 Stainless Steel 2.5 Inch Muffler 8042543

Flowmaster Stainless Steel 40 Series 409 Stainless Steel 2.5 Inch Muffler 8042543

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

Part Number: FLO-8042543

4.92 out of 5 stars ( 12 )

Estimated Ship Date: Tomorrow

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Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52572

Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52572

Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52572

Muffler, Big Block II 70 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Steel, Each

Part Number: FLO-52572

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52571

Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52571

Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52571

Muffler, Big Block II 70 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-52571

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Flowmaster Super 50 Series Performance Steel 2.5 Inch Muffler 52556

Flowmaster Super 50 Series Performance Steel 2.5 Inch Muffler 52556

Flowmaster Super 50 Series Performance Steel 2.5 Inch Muffler 52556

Muffler, Super 50 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Aluminized, Each

Part Number: FLO-52556

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Flowmaster Stainless Steel 50 Series SUV Performance 409 Stainless Steel 2.5 Inch Muffler 852556

Flowmaster Stainless Steel 50 Series SUV Performance 409 Stainless Steel 2.5 Inch Muffler 852556

Flowmaster Stainless Steel 50 Series SUV Performance 409 Stainless Steel 2.5 Inch Muffler 852556

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

Part Number: FLO-852556

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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