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Once a Jeep JK starts seeing real trail use, the factory sport bar quickly becomes a weak point in the chassis. Larger tires, harder lines, and increased suspension travel all push load into areas the factory structure was never designed to support. Builders who wheel their 2 door JK hard know that improving chassis rigidity is necessary to keep the vehicle predictable and protected on the trail.
The Motobilt Roll Cage System was designed around that exact problem. This is a full weld-together internal cage system built specifically for the 2007–2017 Jeep Wrangler JK 2 Door. It replaces the factory structure with a 2 inch DOM main and 1.75 inch cross bracing cage designed for abuse and rigidity while still maintain the factory functions and features of a jeep JK.
Tube placement was driven by real-world use, not just packaging. The forward-positioned windshield tubes follow the windshield line more intentionally to create a cleaner, more cohesive profile when running without a top or with the windshield folded down. Most cages were not designed with this setup in mind and tend to look out of place once the factory lines are removed.
Visibility offroad whether in the rocks or on the back roads is key and this is yet another reason for our forward-positioned windshield tubes. Older more more conventional designs put these bars in your face and create line of sight issues as they are positioned further back blocking visibiility.
Tube design for this cage was driven by more than just fitment. The aggressive front tube design was shaped as a nod to the old school rock buggies and crawlers that defined the sport bringing that raw, purpose-built look to a modern platform. The forward windshield tubes follow the windshield line with intention, keeping the profile clean and cohesive whether you're running with your full doors and hard top on or with the windshield laid down.
This system was built for serious wheelers who like to push their rig to the limit. Drivers who wheel at that level know hard rollovers aren't a matter of if, they're a matter of when. Tops and windshields don't always come home in one piece, and this cage was designed with that reality in mind looking right and functioning properly when everything else has been stripped away.
At the heart of the build, the integrated X-brace behind the front seats doesn't demand attention but it earns it. Tucked in where the short two-door chassis need it most, it pulls the structure together, distributes load across the cage, and adds the kind of rigidity that only shows its worth when things go sideways on the trail.
The system is available in two configurations depending on how the Jeep is built. The Fastback version angles the rear structure forward for increased clearance and a cleaner rear profile. Or people who are running fastback tops. For the rear seat compatible version, (See MB3101-P) maintains space for passengers while still reinforcing the chassis.
Notes:
** This is a weld-together cage kit intended for builders with fabrication experience
*** All tubing should be test fit prior to final welding
**** Interior trimming and modification of factory mounting areas may be required depending on the build and other installed components
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