DSE Rear Chassis Brace Kit (042301DS) - 1964-1972 GM A-Body
Strengthen a critical area of your classic GM A-Body chassis with the Detroit Speed Rear Chassis Brace Kit. Designed for 1964-1972 GM A-Body applications, part number 042301DS triangulates the rear crossmember, frame rail, and upper control arm mount to reduce deflection in the rear section of the chassis. The result is a more rigid foundation that allows the rear suspension and chassis to work together more effectively, making this a smart upgrade for restoration, street-performance, and pro-touring builds.
Detroit Speed developed these braces through an extensive testing program after identifying opportunities to improve upon the original rear chassis brace design. They are engineered as an upgraded replacement for A-Body vehicles originally equipped with rear braces, but can also be installed with minimal effort on cars that did not receive factory braces. An adjustable center section allows each brace to be positioned between the upper and lower rear suspension mounting points, creating effective triangulation without requiring an elaborate chassis modification.
Specifications
- Manufacturer: Detroit Speed
- Part Number: 042301DS
- Product Type: Rear Chassis Brace Kit
- Location: Rear chassis
- Application: 1964-1972 GM A-Body
- Function: Rear chassis stiffening and reinforcement
- Brace Configuration: Triangulates rear crossmember, frame rail, and upper control arm mount
- Adjustment: Adjustable center section
- Installation: Uses rear suspension upper and lower link mounting locations
- Quantity: Pair
Features
- Designed specifically for 1964-1972 GM A-Body chassis
- Reduces deflection within the rear section of the chassis
- Triangulates the rear crossmember, frame rail, and upper control arm mount for increased structural rigidity
- Provides a substantial improvement over the original rear chassis brace design
- Works as an upgraded replacement on A-Body vehicles originally equipped with factory rear chassis braces
- Can also be installed on A-Body vehicles originally built without rear chassis braces
- Adjustable center section allows the brace to be positioned correctly during installation
- Installs using existing upper and lower rear suspension link mounting locations
- Helps create a more rigid chassis foundation for improved suspension performance
- Excellent addition to restoration, street-performance, autocross, and pro-touring A-Body builds
- Sold as a pair for reinforcement of both sides of the rear chassis
Fitment
- 1964 GM A-Body
- 1965 GM A-Body
- 1966 GM A-Body
- 1967 GM A-Body
- 1968 GM A-Body
- 1969 GM A-Body
- 1970 GM A-Body
- 1971 GM A-Body
- 1972 GM A-Body
Fitment Note: Detroit Speed 042301DS is designed for 1964-1972 GM A-Body applications. The braces can replace original rear chassis braces on vehicles equipped with them from the factory or be added to vehicles that were originally built without rear braces.
FAQs
What does the Detroit Speed 042301DS Rear Chassis Brace Kit do?
The braces triangulate the rear crossmember, frame rail, and upper control arm mounting area to reduce deflection in the rear chassis. Increasing rigidity provides a stronger structural foundation for the rear suspension to work from.
Can Detroit Speed 042301DS be installed if my A-Body did not originally have rear chassis braces?
Yes. Detroit Speed specifically states that while the kit was designed as an improved replacement for A-Body vehicles originally equipped with rear braces, it can also be installed with minimal effort on cars that were built without them.
Does installation of Detroit Speed 042301DS require major chassis modifications?
No. The braces install at the existing upper and lower rear suspension link mounting locations. Detroit Speed's installation procedure positions each brace over the threaded ends of the existing link bolts and uses the adjustable center section to establish the proper fit.
Why Buy Detroit Speed from Beefcake Racing?
Beefcake Racing is your source for Detroit Speed suspension and chassis components for classic muscle cars, restorations, street-performance builds, and serious pro-touring applications. From individual chassis upgrades to complete suspension systems, our team can help you choose components that work together for your build. Questions about Detroit Speed 042301DS or your GM A-Body? Email sales@beefcakeracing.com or call 1-855-827-7223.
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