The Fox Body chassis is notorious for being relatively flimsy and easy to twist or even break depending on how much horsepower you're planning on putting down. To prevent this, Detroit Speed offers this complete chassis stiffening kit fitting all 1979-1993 Fox Body Mustangs to reinforce your vehicle's weak points. Included in this kit is DSE's Subframe Connectors, as well as their Exo Brace to both connect your front and rear frame rails, as well as bolster the torque boxes to prevent them from cracking or ripping out completely. If you're looking to build your Mustang well above 400hp, this kit is a must for better traction, handling, control, and safety.
Subframe Connectors: DSE's subframe connectors give your chassis maximum stiffness, improving the control and predictability of your Mustang's suspension. These connectors run all the way from your front frame rails to the rear, preventing your chassis from flexing under extreme conditions which helps performance in every situation. Featuring 2x2x0.083 square steel tubing, this solution offers strength without unnecessary weight, and mounts flush with your pinch welds to maintain factory ground clearance.
Exo Brace: DSE's Exo Brace solves another notorious issue with the Fox Body chassis which is the strength of your torque boxes and lower link mounting point. This brace runs horizontally under your vehicle, connecting the torque boxes to your frame, floor pan, and to each other with a telescoping feature. This upgrade is a must to prevent your torque boxes or upper links from ripping out of the vehicle under extreme forces. Along with added strength, this brace also gives you an additional upper link adjustment hole to correct your lowered vehicle's instant center, but still retains compatibility with your factory links.
About Detroit Speed: Detroit Speed is a leader in high-performance chassis and suspension systems, dedicated to delivering top-tier solutions for builders, fabricators, and enthusiasts. For nearly three decades, they’ve combined innovation, craftsmanship, and modern manufacturing methods—like hydroforming—to create American-made products that offer late-model fit, finish, and performance. Known for their award-winning builds and industry-trusted components such as suspension systems, mini tubs, and wiper kits, Detroit Speed stands for quality, precision, and a relentless drive to push the boundaries of performance. Now part of QA1, they continue to expand their legacy of excellence, offering premium solutions that help bring every automotive vision to life.
Product Benefits:
- Connects your front and rear frame rails for maximum chassis stiffness
- Flush design does not affect ground clearance
- Includes stronger front seat mounting brackets
- Includes torque box reinforcement brackets
- Complete bolt-on (up to 400hp) or weld-in (400+hp) solution
- Constructed from 2x2x0.083 steel tubing and 0.090 plate for strength without unnecessary weight
- Compatible with stock suspension
- Provides additional adjustment hole for upper link, correcting roll center on lowered cars
- Works with factory upper link
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- Vehicle Fitment:
- 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993
