QA1 Tubular K-Member (MUK01) - 1979-1993 Mustang
Upgrade your Fox Body Mustang with the QA1 Tubular K-Member, engineered for 1979-1993 models seeking improved performance, reduced weight, and better suspension geometry. Designed as a direct bolt-in replacement, this K-member enhances handling while creating additional clearance for headers and engine swaps.
Constructed from high-strength, low-alloy steel, this K-member is up to 50 percent lighter than the factory unit, helping reduce overall vehicle weight and improve performance. With optimized geometry for improved Ackerman, anti-dive, and roll center characteristics, it is especially beneficial for lowered Mustangs looking for better handling and stability.
Designed with flexibility in mind, this K-member allows for a wide range of engine swaps. Modular engine mount compatibility makes it easy to install everything from a traditional 5.0L to a modern Coyote engine using QA1 bolt-in mounts (sold separately).
Features
- Tubular K-member for 1979-1993 Mustang (narrow track Fox)
- Up to 50 percent lighter than factory crossmember
- Constructed from high-strength low-alloy steel for durability
- Improves suspension geometry including Ackerman, anti-dive, and roll center
- Increased clearance for headers and engine swaps
- Compatible with multiple engine configurations using QA1 mounts
- Designed for use with QA1 Proma Star coilover struts
- Bolt-in installation with no welding required
- Helps reduce overall vehicle weight for improved performance
- Manufactured in the USA
Additional Notes
- Engine mounts sold separately
- Requires coilover struts, not compatible with factory coil springs
- QA1 control arms strongly recommended for best performance
- Narrow track design for early Fox Body applications
Fitment
- 1979 Ford Mustang
- 1980 Ford Mustang
- 1981 Ford Mustang
- 1982 Ford Mustang
- 1983 Ford Mustang
- 1984 Ford Mustang
- 1985 Ford Mustang
- 1986 Ford Mustang
- 1987 Ford Mustang
- 1988 Ford Mustang
- 1989 Ford Mustang
- 1990 Ford Mustang
- 1991 Ford Mustang
- 1992 Ford Mustang
- 1993 Ford Mustang
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

