UPR 1979-2004 Mustang Heavy Duty Upper & Lower Torque Box Kit

Strengthen one of the most critical areas of your Fox Body or SN95 Mustang chassis with the UPR Heavy Duty Upper & Lower Torque Box Kit. Designed to reinforce or repair weak factory torque boxes, this complete upgrade package dramatically increases rear suspension strength and consistency for high-horsepower street cars, drag racers, autocross builds, and road race applications.

Precision laser cut from 11-gauge Grade 50 high-strength marine steel, this comprehensive reinforcement kit restores structural integrity while helping eliminate common torque box failures caused by aggressive launches and hard cornering. The kit can be installed using either the included Grade 8 hardware or by welding it into place, providing the flexibility to meet the needs of virtually any performance build. Installation can typically be completed in approximately three hours.

Key Features

Fits 1979-2004 Ford Mustang performance applications.
Complete upper and lower torque box reinforcement kit.
Strengthens and repairs factory torque boxes.
Improves rear suspension strength and consistency.
Ideal for drag racing, road racing, autocross, and high-performance street use.
Laser cut for precise fit and finish.
Manufactured from 11-gauge Grade 50 high-strength marine steel.
Bolt-in or weld-in installation.
Includes Grade 8 installation hardware.
Typical installation time of approximately 3 hours.
Made in the USA.

Kit Includes

2 upper reinforcement plates.
2 upper reinforcement boxes.
24-piece Grade 8 upper hardware kit.
2 lower reinforcement plates.
2 lower reinforcement boxes.
24-piece Grade 8 lower hardware kit.

Vehicle Fitment

1979-2004 Ford Mustang GT
1979-2004 Ford Mustang Cobra
1979-2004 Roush Mustang
1979-2004 Saleen Mustang

Notes

Designed to reinforce or repair damaged factory upper and lower torque boxes.
Can be installed using the supplied Grade 8 hardware or permanently welded into place.
Recommended for high-horsepower and competition vehicles to improve chassis durability.