Borla 400495 ProXS Universal Oval Muffler, 2.25-Inch Center Inlet and Outlet, Notched Necks

ProXS Muffler 2.25" Center Inlet/ 2.25" Center Outlet, 4" x 9.5" Oval, 14" Long Body, 19" Overall Length. Universal Part. 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" Center Inlet/ 2.25" Center 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 40363. If clamping, use 3" wide band clamps 18003.
• 2.25" Center Inlet/ 2.25" Center 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 400495 universal muffler is designed for custom exhaust systems that require reliable sound control, efficient exhaust flow, and installation flexibility. It features a 2.25-inch center inlet and 2.25-inch center outlet in a compact oval configuration, making it suitable for a wide range of automotive applications. The reversible design allows the muffler to be oriented according to the layout of the exhaust system.

Constructed from high-quality T-304 austenitic stainless steel, this Borla muffler provides excellent corrosion resistance and long-term durability. Its fully welded construction adds strength, while the free-flow design supports improved exhaust performance. High-temperature continuous-filament fiber acoustic material helps manage exhaust sound without compromising the muffler’s performance characteristics. The natural mill finish may be brushed or polished before installation for a customized appearance.

Notched necks are designed for clamp-on installation with Borla 18322 1-inch-wide band clamps, which are sold separately. The universal fitment and reversible construction provide additional flexibility for custom exhaust projects. For applications requiring un-notched necks, Borla offers the alternate 40363 muffler. This ProXS muffler is made in the USA and backed by Borla’s Million-Mile Warranty. Always confirm inlet, outlet, routing, and clearance requirements before installation.

Product Specifications and Technical Data

• Brand: Borla
• Part Number: 400495
• Series: ProXS
• Application: Universal automotive exhaust system
• Inlet Configuration: 2.25-inch center inlet
• Outlet Configuration: 2.25-inch center outlet
• Body Shape: Oval
• Construction: T-304 stainless steel with fully welded construction

What’s Included

• One Borla ProXS 400495 universal muffler

Fitment: Universal fitment. Custom installation is required. Clamps, tubing, hangers, and other installation hardware are not included.

Features:

• T-304 Stainless Steel Construction: Provides excellent corrosion resistance and durable performance in demanding exhaust environments.
• Free-Flow Exhaust Design: Supports efficient exhaust flow and improved performance potential.
• Reversible Installation: Allows flexible orientation during custom exhaust system installation.
• Notched Necks: Designed for clamp-on installation using Borla 18322 1-inch-wide band clamps, sold separately.

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