Description
ProXS Muffler
Value-priced BORLA® ProXS mufflers share many of the hottest features of our performanceline. Including high-quality 300 Series austenitic stainless steel construction, streetcommandingsound and our Million Mile Warranty. Sizes are available for import anddomestic cars and trucks.
Additional Information
ProXS Muffler 2.25" Offset Inlet/ 2.25" Center Outlet, 4.25" x 7.88" Oval, 14 Long Body, 19" Overall Length. Universal Part. Reversible Design. Notched Necks.
Part Type
Exhaust Muffler
Product Overview
Notched necks for easy clamp-on installation. Compact size is perfect for applications with limited space. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation.
Data: v2 - Desc: v4.2 - Upd: 2026-11-07 17:21:46
Features
- 2.25" Offset Inlet / 2.25" Center Outlet, 4.25" x 7.88" Oval, 14" Long Body, 19" Overall Length
- Alternate muffler with Un-Notched necks is 40658. If clamping, use 3" wide band clamps 18003.
- Notched necks are designed for clamp in installation. Use 1" wide band clamps 18322.
- Universal muffler. Reversible design.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Body Height (in.): | 4.25 |
| Body Height: | 4.250 in. |
| Body Length (in.): | 14 |
| Body Length: | 14.000 in. |
| Body Width (in.): | 7.875 |
| Body Width: | 7.875 in. |
| Construction: | All Welded |
| Description: | Borla® Pro XS Muffler |
| Grade Type: | Performance |
| Inlet Connection Type: | Pipe |
| Inlet Position: | Offset |
| Inlet Size (in.): | 2.25 |
| Inlet Type: | Single Offset |
| Main Piping Diameter: | 2.250 in. |
| Material: | T-304 Stainless Steel |
| Muffler Count: | 1 |
| Off Road Use Only: | No |
| Outlet Outside Diameter: | 2.250 in. |
| Outlet Position: | Center |
| Outlet Size (in.): | 2.25 |
| Outlet Type: | Single Center Outlet |
| Overall Length (in.): | 18 |
| Overall Length: | 18.000 in. |
| Part Number: | bor400479 |
| Shape: | Oval |
| Title Extended: | ProXS Muffler 2.25in Offset/Center 14inx4.25inx7.88in Part # 400479 |
| Title: | ProXS Muffler 2.25in Offset Inlet/ 2.25in Center Outlet 4.25in x 7.88in Oval x 14in Long Body Notched Necks |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Borla, Borla Exhaust |
| StreetFX SKU | bor400479 |
| SFX Item ID | 4224885 |
| Accounting SKU | bor-400479 |
| Manufacturer SKU | 400479 |
| Manufacturer UPC | 808422004794 |
| Alternative References | 400479, BOR-400479 |
Muffler, ProXS, Oval Case, Stainless, 2.25 in. Offset Inlet, 2.25 in. Center Outlet, 18 in. Overall Length
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.
| Product Attributes | |
|---|---|
| UPC | 808422004794 |
| Brand | Borla |
| Quantity | Sold individually. |
| Part Type | Mufflers |
| Case Shape | Oval |
| Reversible | No |
| Width (in.) | 7.875 in. |
| Outlet Style | Standard, without tip |
| Product Line | Borla ProXS Mufflers |
| Inlet Location | Offset |
| Inlet Quantity | 1 |
| Muffler Finish | Natural |
| Outlet Location | Center |
| Outlet Quantity | 1 |
| Thickness (in.) | 4.250 in. |
| Muffler Material | 304 stainless steel |
| Inlet Diameter (in.) | 2.25 in. |
| Overall Length (in.) | 18.00 in. |
| Internal Construction | Straight-through core |
| Outlet Diameter (in.) | 2.25 in. |
| Case Exterior Length (in.) | 14.00 in. |
| Manufacturer's Part Number | 400479 |
Brochures
Compatibility
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