Borla ProXS 19” Muffler with 14" X 4" X 9-1/2" Case & 2-1/4” Center Inlet/Center Outlet
Highlights
- Free-Flowing Design
- T-304 Stainless Steel
- No Droning in Cab
- Clamp-On Installation
Borla ProXS 19” Muffler with a 14" X 4" X 9-1/2" Case and 2-1/4” Center Inlet and Center Outlet.
Liberate your vehicle from constrictive flow with the help of this 19” ProXS muffler from Borla (400495). Engineered with a free-flowing design, this muffler is a performance enhancement any vehicle can use. It’s 100% welded, using T-304 stainless steel tubing for excellent durability while resisting rust. A high-temperature, CFF acoustic material then controls sound, sparing the cab from droning. Installing the muffler is as easy as using 1” wide, band clamps since its necks are notched.
Features and Benefits:
- Universal, oval-shaped muffler
- 2-1/4” 100% welded, T-304 stainless steel tubing
- Rust-resistant construction
- Free flow design improves performance
- Uses high-temp, continuous-filament fiber (CFF) material
- Won’t cause droning
- Completely reversible
- Notched necks for easy, clamp-on installation
- Great for use w/ 1” wide, band-style clamps
Specifications:
- Overall length: 19”
- Case dimensions: 14” X 4” X 9-1/2”
- Center inlet & center outlet: 2-1/4”
Please Note: The 1” wide, band-style clamps are not included; they can be purchased separately under Borla P/N: 18322.
California Residents: Proposition 65 Warning
Related Categories: Mustang Parts, Mustang Exhaust, Mustang Mufflers, Ford Focus ST Parts, Ford F-150 Raptor Parts

Vehicle Fitment
This product will fit the following Bronco years:
This product will fit the following C/K years:
- 1988,
- 1989,
- 1990,
- 1991,
- 1992,
- 1993,
- 1994,
- 1995,
- 1996,
- 1997,
- 1998,
This product will fit the following C10 years:
- 1960,
- 1961,
- 1962,
- 1963,
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
- 1974,
- 1975,
- 1976,
- 1977,
- 1978,
- 1979,
- 1980,
- 1981,
- 1982,
- 1983,
- 1984,
- 1985,
- 1986,
- 1987,
This product will fit the following F-100 years:
- 1948,
- 1949,
- 1950,
- 1951,
- 1952,
- 1953,
- 1954,
- 1955,
- 1956,
- 1957,
- 1958,
- 1959,
- 1960,
- 1961,
- 1962,
- 1963,
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
- 1974,
- 1975,
- 1976,
- 1977,
- 1978,
- 1979,
This product will fit the following F-150 years:
This product will fit the following Focus years:
This product will fit the following Mustang years:
- 1964.5,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
- 1974,
- 1975,
- 1976,
- 1977,
- 1978,
- 1979,
- 1980,
- 1981,
- 1982,
- 1983,
- 1984,
- 1985,
- 1986,
- 1987,
- 1988,
- 1989,
- 1990,
- 1991,
- 1992,
- 1993,
- 1994,
- 1995,
- 1996,
- 1997,
- 1998,
- 1999,
- 2000,
- 2001,
- 2002,
- 2003,
- 2004,
- 2005,
- 2006,
- 2007,
- 2008,
- 2009,
- 2010,
- 2011,
- 2012,
- 2013,
- 2014,
- 2015,
- 2016,
- 2017,
- 2018,
- 2019,
- 2020,
- 2021,
- 2022,
- 2023,
- 2024,
- 2025,