Description
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" x 9.5" Oval, 14" Long Body, 19" Overall Length. Universal Part. Reversible Design.
Part Type
Exhaust Muffler
Product Overview
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.; Best of all, it's made in the USA and backed by BORLA(r)'s Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
Data: v2 - Desc: v4.2 - Upd: 2026-11-07 17:21:22
Features
- 2.25" Offset Inlet/ 2.25" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 24" Overall Length
- Alternate muffler with Notched necks is 400483. Use 1" wide band clamps 18322.
- Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18003.
- 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 |
| Body Height: | 4.000 in. |
| Body Length (in.): | 19 |
| Body Length: | 19.000 in. |
| Body Width (in.): | 9.5 |
| Body Width: | 9.500 in. |
| Construction: | All Welded |
| Description: | Borla® Pro XS Muffler |
| Grade Type: | Performance |
| Inlet Connection Type: | Pipe |
| Inlet Position: | Center |
| Inlet Size (in.): | 2.25 |
| Inlet Type: | Single Center |
| 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: | Offset |
| Outlet Size (in.): | 2.25 |
| Outlet Type: | Single Offset Outlet |
| Overall Length (in.): | 24 (2 ft.) |
| Overall Length: | 24.000 in. |
| Part Number: | bor40664 |
| Shape: | Oval |
| Title Extended: | ProXS Muffler 2.25in Offset/Center 19inx4inx9.5in Part # 40664 |
| Title: | ProXS Muffler 2.25in Offset Inlet/ 2.25in Center Outlet 4in x 9.5in Oval x 14in Long Body |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Borla, Borla Exhaust |
| StreetFX SKU | bor40664 |
| SFX Item ID | 4224567 |
| Accounting SKU | bor-40664 |
| Manufacturer SKU | 40664 |
| Manufacturer UPC | 808422406642 |
| Alternative References | 40664, BOR-40664 |
Muffler, Turbo XL, 2 1/4 in. Inlet/2 1/4 in. Outlet, Brushed Stainless Steel, Each
Borla Turbo XL mufflers are designed for supreme street performance. They offer aircraft-quality, T-304 stainless steel, all-welded construction and more for increased horsepower and torque. These mufflers have been independently tested and proven to provide maximum flow capacity. Borla Turbo XL mufflers are recommended for larger engines.
| Product Attributes | |
|---|---|
| Brand | Borla |
| Manufacturer's Part Number | 40664 |
| Part Type | Mufflers |
| Product Line | Borla Performance Turbo XL Mufflers |
| UPC | 808422406642 |
| Muffler Material | 304 stainless steel |
| Inlet Diameter (in.) | 2.25 in. |
| Outlet Diameter (in.) | 2.25 in. |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| Internal Construction | Turbo-style |
| Inlet Location | Center |
| Outlet Location | Offset |
| Case Shape | Oval |
| Reversible | Yes |
| Muffler Finish | Brushed |
| Case Exterior Length (in.) | 19.00 in. |
| Overall Length (in.) | 24.00 in. |
| Thickness (in.) | 4.000 |
| Width (in.) | 9.500 in. |
| Outlet Style | Standard, without tip |
| Remanufactured | No |
| Quantity | Sold individually. |
Brochures
Compatibility
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