Borla ProXS 24” Un-Notched Muffler with 3” Center Inlet/ 2-1/4” Dual Outlet
Highlights
- Free-Flowing Design
- T-304 Stainless Steel
- Installable in 2 ways
- Completely Reversible
Borla ProXS 24” Un-Notched Muffler with a 3” Center Inlet and 2-1/4” Dual Outlets.
From a drone-free sound to a free-flowing design, this 24” ProXS muffler by Borla makes your joyrides even better (40670). Any vehicle regardless of make or model can enjoy the refined performance of this muffler, which is 100% welded from T-304 stainless steel. It can be welded on using the un-notched necks. Alternatively, you can install it with 3” wide and band-style clamps. Though it has a single 3” inlet and 2-1/4” dual outlets, it’s compatible with systems that have dual inlets and a single outlet.
Features and Benefits:
- Universal, oval-shaped muffler
- 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
- Necks are un-notched for weld-on installation
- Can clamp on w/ 3” wide, band-style clamps
- Usable in system w/ dual inlets & single outlet
Specifications:
- Overall length: 24”
- Case dimensions: 19” X 4” X 9-1/2”
- Center inlet: 3”
- Dual outlet: 2-1/4”
Please Note: Clamps are not included; they can be purchased under Borla P/N: 18003 and 18006.
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,