The TBA Machine Hellcat, Demon, and Redeye Differential Brace is designed to add another point of support to the rear differential on compatible high-performance Dodge Challenger and Charger applications, making it a smart upgrade for Gen 3 HEMI vehicles that see hard street driving, drag strip launches, or increased power. The kit includes the hardware and components needed for installation, with TBA providing application-specific mounting solutions based on differences in the factory crossmember between model years. It installs with the factory differential in place, allowing owners to reinforce the existing drivetrain without replacing the complete differential assembly. Multiple raw and anodized finish options let you match the brace to the rest of your suspension or drivetrain setup. For Hellcat, Demon, and compatible Redeye owners building a stronger rear drivetrain, this brace provides a straightforward way to add support where all that supercharged HEMI torque eventually has to go.

High-horsepower Gen 3 HEMI combinations can put substantial load through the rear drivetrain, especially when additional engine power is paired with sticky tires and aggressive launches. A differential brace becomes a valuable supporting modification because it adds another mounting point to help support the differential assembly under load. That makes the TBA Machine brace a logical addition alongside upgraded axles, driveshafts, cradle components, suspension parts, and other traction-focused modifications. It may not make the fun noises that a camshaft or supercharger pulley does, but keeping the rear drivetrain happy is generally preferable to discovering its limits the expensive way.

TBA designed the brace around the factory rear differential and crossmember rather than requiring a major drivetrain conversion. On 2015 and 2016 Hellcat models, TBA’s product information specifies the provided 8mm hardware for mounting to the crossmember. For 2017 and 2018 Hellcat, Challenger, Charger, and Demon applications, TBA provides adaptable nuts that slide through the rectangular opening in the crossmember because those applications do not have the same internal nuts.

Installation uses two replacement differential bolts along with the upper crossmember hardware. TBA specifies 90 ft-lbs of torque for the 14mm differential bolts, while its current installation instructions call for tightening the 8mm upper hardware until the supplied rubber is compressed approximately 1 to 2mm. TBA also recommends Loctite during installation and lists common hand tools such as a 16mm socket, 12mm hex socket, 13mm socket, vise grips or pliers, and a torque wrench.

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Specifications & Features

• Brand: TBA Machine
• Product Name: Hellcat/Demon/Redeye Diff Brace
• Manufacturer SKU: 150060
• Product Type: Rear Differential Brace
• Installation Location: Rear differential and crossmember
• Vehicle Compatibility: Dodge Charger Hellcat, Dodge Challenger Hellcat, and supported Demon/Redeye applications
• Year Compatibility: TBA specifically documents 2015-2018 Hellcat applications and 2018 Demon fitment; exact Redeye fitment should be verified before ordering
• Engine Compatibility: Applicable to supercharged Gen 3 HEMI vehicle configurations
• Size / Dimensions: Application-specific; exact dimensions not published by TBA Machine
• Weight: Not specified by manufacturer
• Color / Finish Options: Raw Finish
• Installation Hardware: Included
• Differential Hardware: Replacement differential bolts included
• Upper Mounting Hardware: Application-specific 8mm hardware
• Differential Bolt Torque: 90 ft-lbs
• Upper Hardware Installation: Tighten until supplied rubber is compressed approximately 1 to 2mm
• Threadlocker: Loctite specified in TBA installation instructions
• Required Tools Listed by TBA: 16mm socket and ratchet, 12mm hex socket, 13mm socket, vise grips or pliers, torque wrench with at least 90 ft-lb capacity, and potentially an 8mm x 1.25 tap
• Adds another support point to the factory rear differential assembly
• Retains the factory differential
• Designed for compatible Hellcat, Demon, and Redeye drivetrain configurations
• Suitable for stock and modified Gen 3 HEMI applications
• Complements upgraded axles, driveshafts, suspension components, and other drivetrain upgrades
• Intended Uses: Street performance, drag racing, increased-power builds, traction-focused setups, and rear drivetrain reinforcement
• Installation Difficulty: Moderate
• Professional Installation: Recommended for owners unfamiliar with drivetrain or suspension work
• Fitment Note: TBA requests vehicle information at the time of purchase to ensure the correct configuration is supplied.