Reinforcement Kit

Increase stiffness and reinforce the torque boxed in your 1979-2004 Mustang with Lower Torque Box Reinforcement Braces from BMR's suspension. The Fox-chassis Mustangs were not known for being super strong. When large amounts of torque are applied to the chassis, the factory torque boxes are known to crack and rip. This causes all kinds of rearend alignment issues, poor performance, and unsafe driving conditions. Designed from CNC-laser cut, CNC-formed steel plate, BMR's Lower Torque Box Reinforcement Braces are designed to bolt into the 79-04 Mustang chassis, adding strength to the lower control arm mounts. This means you can put as much power and torque to the wheels as possible, without fear of damaging this critical area of the chassis.

Additional Information

This kit includes the braces and hardware to reinforce the lower rear control arm mounts (torque boxes).

Part Type

Chassis Frame Reinforcement

Product Overview

Increase stiffness and reinforce the torque boxed in your 1979-2004 Mustang with Lower Torque Box Reinforcement Braces from BMR Suspension. The Fox-chassis Mustangs were not known for being super strong. When large amounts of torque are applied to the chassis, the factory torque boxes are known to crack and rip. This causes all kinds of rearend alignment issues, poor performance, and unsafe driving conditions. Designed from CNC-laser cut, CNC-formed steel plate, BMR?s Lower Torque Box Reinforcement Braces are designed to bolt into the ?79-?04 Mustang chassis, adding strength to the lower control arm mounts. This means you can put as much power and torque to the wheels as possible, without fear of damaging this critical area of the chassis.

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Product Downloads

#	Document Type	Download
1.	Application Guide

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Torque Box Reinforcement Plates, Lower, Rear, Steel, Natural, Ford, Kit

BMR Suspension torque box reinforcement plate kits offer strength and performance benefits for your Fox-chassis Mustang—which are not known for being strong. These kits will increase stiffness, reinforce the factory torque box, reduce control arm mount deflection, and deliver the ability for added horsepower and torque to be applied safely to your Fox chassis. The reinforcement braces for the upper and lower rear control arm mounts (torque boxes) are made from CNC laser-cut, CNC-formed, and MIG-welded steel plate. The plates bolt in using supplied hardware and require very little fabrication to complete. BMR kits are available for lower or upper only, or together. Prevent rear-end alignment issues, poor performance, and unsafe driving conditions—while putting as much power to the wheels as possible, without fear of damaging the critical area of your chassis—by adding BMR reinforcement plate kits.