Borla ProXS Universal 2.5-Inch Offset Inlet and Center Outlet Notched Muffler - Part 400484

ProXS Muffler 2.5" Offset Inlet/ 2.5" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 25" Overall Length. Notched necks for easy clamp-on installation using 1" wide band style clamps 18325 (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 2.5" Offset Inlet/ 2.5" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 25" Overall Length. Universal Part. Reversible Design. Notched Necks. Million Mile Warranty

• Alternate muffler with Un-Notched necks is 40665. If clamping, use 3" wide band clamps 18004.
• 2.5" Offset Inlet/ 2.5" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 25" Overall Length
• Notched necks are designed for clamp in installation. Use 1" wide band clamps 18325.
• Universal muffler. Reversible design.

The Borla ProXS muffler, part 400484, is a universal performance muffler designed for custom exhaust systems using 2.5-inch tubing. It features an offset inlet and center outlet in a reversible configuration, giving installers added flexibility when positioning the muffler within a vehicle's exhaust layout. The notched necks are designed for clamp-on installation with 1-inch-wide band clamps, while the compact oval body supports installation in a variety of custom applications. Clamps are sold separately.

Constructed from high-quality T-304 austenitic stainless steel, the Borla 400484 provides excellent corrosion resistance and long-term durability. Its fully welded construction reinforces the muffler assembly, while the free-flow design helps promote efficient exhaust flow and improved performance. High-temperature continuous-filament fiber acoustic material helps control sound while maintaining the aggressive performance character associated with the ProXS series. The natural mill finish may be brushed or polished before installation.

This universal Borla muffler is made in the USA and backed by Borla's Million-Mile Warranty. The reversible design allows the inlet and outlet orientation to be adapted to the installation, and the notched necks simplify clamp-on fitting. For an alternative configuration with un-notched necks, consider Borla part 40665; that version uses 3-inch-wide band clamps. This product is intended for custom automotive exhaust applications and is not a direct-fit replacement for a specific vehicle.

What's Included

• One Borla ProXS universal muffler, part 400484
• Installation clamps are not included

Fitment

Universal fitment for custom exhaust systems requiring 2.5-inch tubing. Professional installation is recommended to confirm clearance, orientation, and compatibility with the vehicle's existing exhaust components.

Features:

• Offset Inlet and Center Outlet: Uses 2.5-inch inlet and outlet connections for compatible custom exhaust systems.
• Reversible Design: Allows flexible muffler orientation during installation.
• Notched Necks: Supports clamp-on installation with 1-inch-wide band clamps, such as Borla 18325 clamps.
• T-304 Stainless Steel Construction: Provides strong corrosion resistance and durable performance.
• Fully Welded Construction: Reinforces the muffler body for dependable service.
• Free-Flow Performance: Promotes efficient exhaust flow for improved system performance.
• CFF Acoustic Material: High-temperature continuous-filament fiber helps manage exhaust sound.
• Made in the USA: Manufactured in the United States and backed by Borla's Million-Mile Warranty.

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: false
Units Per Sku: 1