Borla ProXS Mufflers

Precision manufactured by the pioneer in exhaust performance, Borla Pro XS mufflers feature proven high-powered technology that is surprisingly affordable. Made of rust-free high quality, austenitic stainless steel, Borla ProXS mufflers deliver more power, improved fuel economy, prolonged engine life, and a street-commanding growl that screams performance. All Borla ProXS Mufflers (formerly called Borla Turbo Mufflers) utilize a straight-through design. Borla does not use chambers or baffles that slow down the flow of exhaust. As such, every one of Borla universal mufflers are reversible. Borla ProXS mufflers are available in a variety of inlet and outlet size, quantity or location configurations.


  • Un-Notched necks are designed for weld in installation
  • If clamping, use 3-inch wide band clamps #18003
  • Alternate muffler with Notched necks is #400479
  • Use 1-inch wide band clamps #18322
Sound Level Shape Material Inlet Dia.
Aggressive Oval Stainless 2.25"
Outlet Dia. Inlet/Outlet Config. Case Size Overall Len.
2.25" Center/Offset 14" X 4.25" X 7.88" 19"
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  • Product Details
  • Installation
  • Warranty
  • Vehicle Fitment
  • Reviews
  • Reversible design for installation flexibility
  • High-quality T-304 austenitic stainless steel will never rust
  • 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
  • Backed by Borla's Million-Mile warranty
  • Made in the USA