ProXS Muffler 2.5in Dual In/Out

The BORLA ProXS Muffler 2.5in Dual In/Out is engineered for automotive enthusiasts seeking refined exhaust performance without sacrificing engine sound character. This universal muffler accommodates dual 2.5-inch inlet and outlet piping, making it compatible with a wide range of modern performance and stock exhaust systems. Designed as a direct bolt-on component, it delivers the balance between acoustic control and flow efficiency that serious drivers demand for daily driving, weekend spirited use, and track-focused builds.

Constructed from premium stainless steel, the ProXS muffler features a 24-inch overall length with an oval body measuring 19 inches by 4 inches by 9.5 inches—proportions optimized for mounting in tight underbody clearances while maximizing internal sound-dampening chambers. The dual inlet/outlet configuration ensures balanced backpressure across both exhaust streams, reducing drone at cruise speeds while maintaining responsiveness during acceleration. BORLA's ProXS technology employs proprietary absorption materials and resonator design to attenuate unwanted frequencies without choking exhaust velocity, resulting in measurable horsepower retention compared to restrictive OEM units.

This muffler suits owners of twin-exhaust or modified single-to-dual configurations seeking independent rear axle exhaust routing. Installation requires basic suspension work or professional alignment to accommodate the 10.3 x 4.8 x 26.55-inch shipping profile. The natural stainless finish resists corrosion in all climates and polishes to a mirror shine for show-quality appearance. Verify inlet and outlet pipe diameter (2.5 inches) matches your current or planned exhaust piping before purchase to ensure seamless integration with your system.