Borla ProXS Mufflers

4.72 out of 5 stars 518 Customer Reviews

Precision-manufactured by the pioneers in exhaust performance, Borla ProXS mufflers feature proven, high performance technology that is surprisingly affordable. These silencers are manufactured from rust-resistant, aircraft-quality T-304 stainless steel. They'll deliver more power, improved fuel economy, prolonged engine life, and a street-commanding growl that conveys performance. Borla ProXS mufflers are available in a variety of inlet and outlet size/quantity/location configurations.

Results 1 - 25 of 40

Borla ProXS 304 Stainless Steel 3 Inch Muffler 40353

Borla ProXS 304 Stainless Steel 3 Inch Muffler 40353

Muffler, Pro XS, 3 in. Offset Inlet/3 in. Offset Outlet, Stainless Steel, Natural, Universal, Each

Part Number: BOR-40353

4.86 out of 5 stars ( 28 )

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Borla ProXS 304 Stainless Steel 2.5 Inch Muffler 40364

Muffler, Pro XS, 2.5 in. Center Inlet/2.5 in. Center Outlet, Stainless Steel, Natural, Universal, Each

Part Number: BOR-40364

4.9 out of 5 stars ( 39 )

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Borla ProXS 304 Stainless Steel 2.5 Inch Muffler 400286

Muffler, ProXS, Oval, Two 2.5 in. Inlets/Two 2.5 in. Outlets, Stainless Steel, Brushed, Each

Part Number: BOR-400286

4.83 out of 5 stars ( 42 )

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Borla ProXS 304 Stainless Steel 2.5 Inch Muffler 40358

Muffler, Pro XS, 2.5 in. Center Inlet/2.5 in. Offset Outlet, 14 in. Shell Length, 9.5 in. Width, 4 in. High

Part Number: BOR-40358

4.67 out of 5 stars ( 24 )

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Borla ProXS 304 Stainless Steel 2.5 Inch Muffler 40665

Muffler, Pro XS, Stainless Steel, Natural, 2.5 in. Inlet, 2.5 in. Outlet, Each

Part Number: BOR-40665

3.83 out of 5 stars ( 12 )

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Borla ProXS 304 Stainless Steel 2.5 Inch Muffler 400481

Muffler, ProXS, Oval Case, Stainless, 2.5 in. Center Inlet, 2.5 in. Offset Outlet, 18 in. Overall Length, Each

Part Number: BOR-400481

5.0 out of 5 stars ( 2 )

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Borla ProXS 304 Stainless Steel 3 Inch Muffler 400482

Muffler, ProXS, Oval, Stainless Steel, Natural, 3.00 in. Center Inlet, 3.00 in. Offset Outlet, Each

Part Number: BOR-400482

4.67 out of 5 stars ( 6 )

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Borla ProXS 304 Stainless Steel 3 Inch Muffler 400491

Muffler, ProXS, Oval, Stainless, Natural, 3.00 in. Offset Inlet/Outlet, 14.00 in. Case Length, Each

Part Number: BOR-400491

4.4 out of 5 stars ( 5 )

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Borla ProXS 304 Stainless Steel 2.5 Inch Muffler 400490

Muffler, ProXS, Oval Case, Stainless, 2.5 in. Offset Inlet, 2.5 in. Offset Outlet, 14 in. Case Length, Each

Part Number: BOR-400490

4.4 out of 5 stars ( 5 )

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Borla ProXS 304 Stainless Steel 2.25 Inch Muffler 40357

Muffler, Pro XS, 2.25 in. Center Inlet/2.25 in. Offset Outlet, Stainless Steel, Natural, Universal, Each

Part Number: BOR-40357

4.82 out of 5 stars ( 17 )

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Borla ProXS 304 Stainless Steel 2.5 Inch Muffler 400485

Muffler, ProXS, Oval Case, Stainless, 2.5 in. Center Inlet, Dual 2.5 in. Offset Outlet, 19 in. Case Length

Part Number: BOR-400485

5.0 out of 5 stars ( 4 )

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Borla ProXS 304 Stainless Steel 2.25 Inch Muffler 400479

Muffler, ProXS, Oval Case, Stainless, 2.25 in. Offset Inlet, 2.25 in. Center Outlet, 18 in. Overall Length

Part Number: BOR-400479

Not Yet Reviewed

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Borla ProXS 304 Stainless Steel 3 Inch Muffler 400487

Muffler, ProXS, Oval, Stainless, Single 3.00 in. Center Inlet, Dual 2.50 in. Outlet, 19.00 in. Case Length

Part Number: BOR-400487

5.0 out of 5 stars ( 2 )

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Borla ProXS 304 Stainless Steel 3 Inch Muffler 400486

Muffler, ProXS, Oval Case, Stainless, 3 in. Center Inlet, Dual 2.25 in. Offset Outlets, 23 in. Overall Length

Part Number: BOR-400486

4.33 out of 5 stars ( 6 )

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Borla ProXS 304 Stainless Steel 3 Inch Muffler 40474

Muffler, Pro XS, 3 in. Inlet/Dual 2 1/2 in. Outlets, Transverse, Stainless Steel, Natural, Each

Part Number: BOR-40474

4.25 out of 5 stars ( 4 )

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Borla ProXS 304 Stainless Steel 2.25 Inch Muffler 400489

Muffler, ProXS, Oval Case, Stainless, 2.25 in. Offset Inlet, 2.25 in. Offset Outlet, 14 in. Case Length, Each

Part Number: BOR-400489

5.0 out of 5 stars ( 1 )

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Borla ProXS 304 Stainless Steel 2.25 Inch Muffler 400483

Muffler, ProXS, Oval Case, Stainless, 2.25 in. Center Inlet, 2.25 in. Offset Outlet, 19 in. Case Length, Each

Part Number: BOR-400483

5.0 out of 5 stars ( 1 )

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Borla ProXS 304 Stainless Steel 2 Inch Muffler 400494

Muffler, ProXS, Oval Case, Stainless, 2.00 in. Center Inlet, 2.00 in. Center Outlet, 14 in. Case Length, Each

Part Number: BOR-400494

Not Yet Reviewed

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Borla ProXS 304 Stainless Steel 2 Inch Muffler 40657

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

Part Number: BOR-40657

Not Yet Reviewed

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Borla ProXS 304 Stainless Steel 2.25 Inch Muffler 400478

Muffler, ProXS, Oval Case, Stainless, 2.25 in. Center Inlet, 2.25 in. Offset Outlet, 14 in. Case Length, Each

Part Number: BOR-400478

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 20, 2025 if ordered today

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Estimated Ship Date: Aug 20, 2025 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ 409 Stainless Steel 409 Stainless Steel 2.25 Inch Muffler SUM-632201

4.75 out of 5 stars ( 14 )

Estimated Ship Date: Tomorrow

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Borla ProXS 304 Stainless Steel 2.5 Inch Muffler 400480

Muffler, ProXS, Oval Case, Stainless, 2.5 in. Center Inlet, 2.5 in. Offset Outlet, 14 in. Case Length, Each

Part Number: BOR-400480

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Borla ProXS 304 Stainless Steel 2.5 Inch Muffler 400484

Muffler, ProXS, Oval Case, Stainless, 2.5 in. Center Inlet, 2.5 in. Offset Outlet, 23 in. Overall Length, Each

Part Number: BOR-400484

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

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Borla ProXS 304 Stainless Steel 2.25 Inch Muffler 400492

Muffler, ProXS, Oval Case, Stainless, Dual 2.25 in. Inlet, Dual 2.25 in. Outlet, 19 in. Case Length, Each

Part Number: BOR-400492

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Borla ProXS 304 Stainless Steel 2.25 Inch Muffler 400495

Muffler, ProXS, Oval Case, Stainless, 2.25 in. Center Inlet, 2.25 in. Center Outlet, 14 in. Case Length, Each

Part Number: BOR-400495

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Borla ProXS 304 Stainless Steel 2 Inch Muffler 40344

Muffler, Pro XS, 2 in. Offset Inlet/2 in. Center Outlet, Stainless Steel, Natural, Universal, Each

Part Number: BOR-40344

5.0 out of 5 stars ( 7 )

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