UPR Products Extreme Lower Torque Box Replacement Kit; Welded (79-04 Mustang)Find parts that fit my vehicle

Heavy-Duty Suspension Upgrade. The UPR Products Extreme Lower Torque Box Replacement Kit is a serious structural upgrade designed for 1979-2004 Ford Mustang Models. Built for high-performance applications, this kit improves your Mustang’s suspension geometry by allowing for instant center changes—enhancing traction and launch stability under extreme loads. It’s a reliable solution for race-ready builds and aggressive street setups alike.

Construction and Appearance. Crafted from robust 1/4-inch-thick steel, this torque box kit is engineered for long-lasting strength and durability. It features a raw metal finish that allows for custom finishing or coating depending on your project needs. The spot-welded design includes staggered stainless steel pins, ensuring a secure connection with Pro Series or Extreme Duty lower control arms while maintaining OE compatibility.

Installation. This kit offers a direct replacement setup, ideal for vehicles undergoing structural reinforcement or chassis restoration. The adaptable layout works best with advanced installations, particularly when paired with compatible aftermarket control arms. Due to its raw finish and structural nature, professional installation is recommended for proper alignment and long-term performance.

Application. This UPR Products Extreme Lower Torque Box Replacement Kit fits 1979-2004 Ford Mustang Models. Designed to handle the demands of serious performance use, it strengthens rear suspension mounting points and helps optimize vehicle handling during acceleration. Whether you're building a drag car or enhancing a street machine, this kit delivers trusted durability and support.

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