Uni-Body Stiffeners

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Product Details


  • 3/16" Steel Construction
  • Eliminates Chassis Flex
  • Available for both Jeep® Cherokee XJ and Jeep® Grand Cherokee ZJ

Jeep® Cherokee XJ and Grand Cherokee ZJ were originally designed to do the mall crawl in questionable weather, not to climb a 30-foot waterfall. As a result, the unibody will flex and eventually get bent out of shape causing issues with door-fitment, rear hatch misalignment, creaking and groaning while driving, cracking and many other less than pleasant issues thus leading to the invention of TNT Unibody stiffeners nearly eight years ago. Since that time we have sold thousands of chassis stiffeners to Jeep® Cherokee XJ and Grand Cherokee ZJ owners.

. Using our Unibody Stiffeners by themselves you can establish a chassis sub-frame where there never has been one.

New! Chassis Stiffener Extensions

For those running long arm suspension setups on their Jeep® Cherokee XJ's TNT now offers chassis stiffener extensions. Constructed of 3/16" steel plate like our chassis stiffeners they extend from the front edge of our chassis stiffeners to just behind the coil bucket. Requires use of a long arm style suspension. Factory lower control arm mounts have to be removed in order to install.

Note:Welding required during installation. Product ships bare metal and chassis stiffeners are sold in pairs (left and right). Chassis stiffeners were designed to work with the TNT Rock-Tek Y-LinkTM Radius Arm Suspension System, TNT Rock-Tek Y-LinkTM Radius Arm Upgrade, or our HD Bellypan for establishing a complete sub-frame

Chassis stiffener extensions are compatible with Jeep® Cherokee XJ's only.

For XJ install instructionsCLICK HERE

For ZJ install instructionsCLICK HERE

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