Borla ProXS 400489 Universal Oval Muffler with 2.25-Inch Offset Inlet and Outlet

ProXS Muffler 2.25" Offset Inlet/ 2.25" Offset Outlet, 4" x 9.5" Oval, 14" Long Body, 19" Overall Length. Notched necks for easy clamp-on installation using 1" wide band style clamps 18322 (clamps not included). Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 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. ProXS Muffler 2.25" Offset Inlet/ 2.25" Offset Outlet, 4" x 9.5" Oval, 14" Long Body, 19" Overall Length. Universal Part. Reversible Design. Notched Necks. Million Mile Warranty

• Alternate muffler with Un-Notched necks is 40351. If clamping, use 3" wide band clamps 18003.
• 2.25"" Offset Inlet/ 2.25"" Offset Outlet, 4" x 9.5" Oval, 14" Long Body, 19" Overall Length
• Notched necks are designed for clamp in installation. Use 1" wide band clamps 18322.
• Universal muffler. Reversible design.

The Borla ProXS 400489 universal muffler is designed for custom exhaust systems that require dependable sound control, efficient exhaust flow, and installation flexibility. It features a 2.25-inch offset inlet and 2.25-inch offset outlet in a compact oval configuration, making it suitable for a wide range of automotive exhaust applications. The reversible design allows the muffler to be positioned according to the available routing and clearance requirements.

Constructed from high-quality T-304 austenitic stainless steel, the Borla ProXS muffler provides excellent corrosion resistance and long-term durability. Its fully welded construction adds structural strength, while the free-flow design supports improved exhaust performance. High-temperature continuous-filament fiber acoustic material helps manage sound without compromising the muffler’s performance characteristics.

The notched necks are intended for clamp-on installation with compatible 1-inch-wide band clamps, sold separately. The natural mill finish can be brushed or polished before installation for a customized appearance. This universal muffler is made in the USA and backed by Borla’s Million-Mile Warranty, reflecting the brand’s focus on quality and lasting performance.

Brief Description: Universal Borla ProXS oval muffler with offset inlet and outlet, reversible installation, stainless steel construction, and clamp-ready notched necks.

What's Included: One Borla ProXS 400489 muffler. Installation clamps are not included.

Fitment: Universal automotive application. Verify exhaust tubing size, inlet and outlet orientation, available clearance, and local emissions requirements before installation.

Features:

• Offset Inlet and Outlet: Uses 2.25-inch offset inlet and outlet connections for flexible custom exhaust routing.
• Reversible Design: Can be installed in either direction to accommodate different exhaust layouts and clearance requirements.
• T-304 Stainless Steel: Provides strong corrosion resistance and reliable durability in demanding exhaust environments.
• Free-Flow Performance: Supports efficient exhaust flow while high-temperature continuous-filament fiber material helps control sound.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1