Borla 400287 ProXS Universal Muffler 2.25" Dual Inlet/Dual Outlet

Vehicle Fitment

• Universal fit for vehicles with 2.25" exhaust piping - not vehicle specific

Features

• Borla ProXS™ universal muffler for versatile custom exhaust applications
• Dual 2.25" inlet and dual 2.25" outlet configuration for free exhaust flow
• Integrated internal X-pipe for improved performance and sound quality
• Reversible design for flexible installation orientation
• T-304 stainless steel construction resists corrosion and provides durability
• Oval body design (4" x 9.5") with a 19" long body and 24" overall length
• Machined with high-temperature fiber acoustic material for balanced tone
• Backed by Borla's Million-Mile Warranty

Specifications

• Part Number: 400287
• Series: ProXS™ Universal Muffler
• Main Pipe Diameter: Dual 2.25" inlet and outlet
• Muffler Body Size: 19" x 4" x 9.5"
• Overall Length: 24"
• Material: T-304 stainless steel
• Design: Dual inlet/dual outlet with internal X-pipe
• Fitment: Universal (matches compatible 2.25" exhaust pipe)

Included Components

• 1x ProXS™ universal muffler (Borla 400287)

Product Description

The Borla 400287 ProXS™ Universal Muffler is a premium performance muffler designed for use in custom exhaust systems or as a replacement in setups with 2.25" exhaust piping. Featuring a dual inlet and dual outlet design with an internal X-pipe, this muffler enhances exhaust flow and gives a richer exhaust tone compared to many stock mufflers. Its reversible design provides flexibility in installation orientation, making it suitable for a variety of vehicle customizations.

Built from high-quality T-304 stainless steel, the 400287 offers excellent corrosion resistance and long-lasting durability. The oval body and internal acoustic material help balance sound characteristics, delivering a performance-oriented tone that's deeper and more aggressive than stock. Because it is universal rather than vehicle specific, this muffler fits many custom exhaust configurations that match its 2.25" inlet/outlet size. Whether you are building a custom exhaust or replacing a worn-out component, the Borla ProXS™ muffler combines quality construction with a performance-ready design backed by Borla's Million-Mile Warranty.