Part Premiere: RB4020-Rear Frame Section

Introducing our latest TJ Wrangler rust solution, our Rear Frame Section (RB4020L & RB4020R).

Though the TJ Wrangler features many modern upgrades from Jeep’s transition from the YJ, one of the borderline nostalgic, yet still neglectful, changes is the rear crossmember and rear bumper.  The YJ offered a bare frame rear crossmember and it was exposed to Mother Nature for rust and decay to accrue.  The TJ, however, offers a hollow plastic cover that, while still better than bare metal, redirects water straight under the tub and into the frame, practically exposing it like its brother before it.

Enter our Rear Frame Section.  Rust accrued in the rear crossmember pollutes the frame rails and begins to travel into the mounts and center sections.  In addition to replacing your rear crossmember (RB4022 – Rear Crossmember), it’s a good idea to replace the rear frame rails to further reinforce your vehicle and add to the much needed rigidity.

The part is cut to factory specifications ensuring each bumper slot and frame hole sits exactly where it’s intended.  

You can pick up your own Rear Frame Section at the link below.  And when you do, be sure to check out our fully written instructions or our start to finish video walkthrough,

Take control of your own restoration, with Rust Buster Frameworks.