Borla Pro-XS Universal Muffler 2" Center Inlet / 2" Center Outlet (40347)
Optimize your custom exhaust system and maximize horse power with the Borla Pro-XS Universal Muffler. Engineered as a high-performance upgrading choice for street cars, sport compacts, and custom projects utilizing 2-inch piping, this inline oval muffler features a street-legal, straight-through free-flow internal design. By eliminating restrictive backpressure, it significantly improves exhaust gas velocity to boost horsepower and torque delivery. It unleashes a deep, sporty exhaust note under acceleration while using high-temperature continuous-filament fiber acoustic packing material to keep cruising speeds refined and free of harsh drone.
Built to handle decades of daily driving and track use, this heavy-duty street muffler features a 100% welded chassis crafted from premium T-304 austenitic stainless steel for maximum protection against rust and corrosion. The smooth, un-notched necks are specifically optimized for a seamless weld-in installation by custom fabricators, though they can also be adapted with heavy-duty wide two-bolt style band clamps. Its center-to-center, fully reversible configuration allows for complete packaging flexibility when mocking up your system. Arriving in a classic natural mill finish that can be brushed or polished to a mirror shine, this American-made unit is backed by Borla's legendary Million-Mile Warranty.
Features
- Straight-through free-flow performance engineering eliminates backpressure to boost horsepower
- Provides a deep, throaty sport note under load with excellent cruising sound control
- Manufactured from 100% welded, premium T-304 austenitic stainless steel for lifetime durability
- Features smooth, un-notched necks optimized for direct weld-in custom exhaust fabrication
- Utilizes high-temperature continuous-filament fiber (CFF) packing for precise frequency control
- Fully reversible layout featuring a straight-line 2" center inlet and 2" center outlet
- Proudly made in the USA and backed by a Million-Mile Warranty
Fitment
- Universal Fitment
- Universal Custom Exhaust Applications
- Universal 2" Weld-In Center-Inlet/Center-Outlet Configurations
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

