Chassis Stiffeners

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Looking to eliminate chassis flex and improve high-speed stability?  Chassis stiffeners are engineered for serious performance—perfect for drag racing, autocross, and modern muscle cars. Whether you’re launching hard on the strip or carving corners at your local track, these reinforcements provide the rigidity your build demands.

From G-Body frame braces to Mustang torque box reinforcements and Camaro cradle braces, our selection supports a wide range of applications. These bolt-on and weld-in solutions maximize suspension efficiency and reduce body roll, wheel hop, and frame twist under load.

Ideal for:

  • Street & strip builds

  • Pro-touring and autocross cars

  • Late-model muscle & classic performance vehicles

Upgrade with proven chassis stiffening components from trusted brands like UMI Performance, BMR Suspension, and Hotchkis, and drive with confidence at the limit.

G-Body Front Frame Reinforcement Bar – Fits 1978–1988 GM G-Body

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G-Body Front Frame Reinforcement Bar – Fits 1978–1988 GM G-Body

$299.99
UMI Performance Tubular Front Steering Brace – 1983–1992 GM F-Body – Red Powder Coat

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UMI Performance Tubular Front Steering Brace – 1983–1992 GM F-Body – Red Powder Coat

$99.99
Hotchkis Performance 1404 Convertible X-Brace – 1967–1969 Camaro/Firebird

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Hotchkis Performance 1404 Convertible X-Brace – 1967–1969 Camaro/Firebird

$299.99
Ridetech Power Steering Box Reinforcement Bracket – 1963–1982 Chevrolet Corvette

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Ridetech Power Steering Box Reinforcement Bracket – 1963–1982 Chevrolet Corvette

$80.00
Whiteline KSB729 Rear Chassis Support Brace – 2005–2014 Ford Mustang

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Whiteline KSB729 Rear Chassis Support Brace – 2005–2014 Ford Mustang

$164.88
Improve your 1978–1988 GM G-Body's handling with the UMI Performance 3053-R Front Reinforcement Brace. Durable steel construction with a red powder coat finish enhances rigidity and reduces chassis flex.

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UMI Performance 3053-R Front Reinforcement Brace – 1978–1988 GM G-Body – Red Powder Coat

$299.99
UMI Performance 3053-B Front Reinforcement Brace – 1978–1988 GM G-Body – Black Powder Coat

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UMI Performance 3053-B Front Reinforcement Brace – 1978–1988 GM G-Body – Black Powder Coat

$299.99
70-81 GM F-Body Front Subframe Repair Kit Virtual Speed Performance UMI PERFORMANCE

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70-81 GM F-Body Front Subframe Repair Kit

$44.99
QA1 5212 Rear Tubular Frame Brace – 1964–1967 GM A-Body – Black Powder Coat Rear Tubular Frame Brace - 64-67 GM A-Body Virtual Speed Performance QA1

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QA1 5212 Rear Tubular Frame Brace – 1964–1967 GM A-Body – Black Powder Coat

$174.95
QA1 5211 Rear Tubular Frame Brace – 1968–1972 GM A-Body – Black Powder Coat Rear Tubular Frame Brace - 68-72 GM A-Body Virtual Speed Performance QA1

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QA1 5211 Rear Tubular Frame Brace – 1968–1972 GM A-Body – Black Powder Coat

$178.95
QA1 5210 Rear Tubular Frame Brace – 1978–1988 GM G-Body – Black Powder Coat Rear Tubular Frame Brace - 78-88 GM G-Body Virtual Speed Performance QA1

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QA1 5210 Rear Tubular Frame Brace – 1978–1988 GM G-Body – Black Powder Coat

$178.95
Hotchkis Performance 20104 Chassis Max Brace – 2010–2014 Chevrolet Camaro – Black Powder Coat 10- Camaro Chassis Brace Virtual Speed Performance HOTCHKIS PERFORMANCE

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Hotchkis Performance 20104 Chassis Max Brace – 2010–2014 Chevrolet Camaro – Black Powder Coat

$599.99
Hotchkis Performance 1403 Trailing Arm Mount Braces – 1964–1967 GM A-Body – Black Powder Coat 64-67 GM A Body Trailing Arm Mount Braces Virtual Speed Performance HOTCHKIS PERFORMANCE

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Hotchkis Performance 1403 Trailing Arm Mount Braces – 1964–1967 GM A-Body – Black Powder Coat

$199.99
Hotchkis Performance 1403 Trailing Arm Mount Braces – 1964–1967 GM A-Body – Black Powder Coat 68-72 GM A Body Trailing Arm Mount Braces Virtual Speed Performance HOTCHKIS PERFORMANCE

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Hotchkis Performance 1402 Trailing Arm Mount Braces – 1968–1972 GM A-Body – Black Powder Coat

$199.99
BMR Suspension TBR001 Torque Box Reinforcement Plate Kit – 1979–2004 Ford Mustang Torque box reinforcement plate kit Virtual Speed Performance BMR SUSPENSION

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BMR Suspension TBR001 Torque Box Reinforcement Plate Kit – 1979–2004 Ford Mustang

$99.95
BMR Suspension CB009R Cradle Brace – 2016–2018 Chevrolet Camaro – Red Powder Coat 16- Camaro Cradle Brace Front and Rear of Cradle Virtual Speed Performance BMR SUSPENSION

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BMR Suspension CB009R Cradle Brace – 2016–2018 Chevrolet Camaro – Red Powder Coat

$229.95
BMR Suspension CB008R Front Cradle Brace – 2016–2018 Chevrolet Camaro – Red Powder Coat 16- Camaro Cradle Brace Front and Rear of Cradle Virtual Speed Performance BMR SUSPENSION

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BMR Suspension CB008R Front Cradle Brace – 2016–2018 Chevrolet Camaro – Red Powder Coat

$149.95
BMR Suspension CB005R Cradle Bushing Lockout Kit – 2015–2020 Ford Mustang – Red Powder Coat 15-17 Mustang Cradle Bushing Lockout Kit Virtual Speed Performance BMR SUSPENSION

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BMR Suspension CB005R Cradle Bushing Lockout Kit – 2015–2020 Ford Mustang – Red Powder Coat

$199.95
15-20 Mustang Cradle Bushing Lockout Kit Virtual Speed Performance BMR SUSPENSION 15-20 Mustang Cradle Bushing Lockout Kit Virtual Speed Performance BMR SUSPENSION

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BMR Suspension CB005H Cradle Bushing Lockout Kit – 2015–2023 Ford Mustang – Black Hammertone Finish

$199.95