Rock Hard 4x4 Front Seat Harness Bar
JT/JL 4Dr
Features & Product Details
The RH4x4 Jeep bolt-in Sport Cage is the cornerstone of Rock Hard 4x4 products. Developed first for the Jeep Wrangler TJ and proven after years and years of trail use and abuse - the RH4x4 bolt-in Sports Cage has become one of the most popular safety upgrades in the Jeep aftermarket industry.
The Why - Factory Design Complications
The Wrangler JL almost didn't come to market with solid axles. Weight was a major factor in determining if the Wrangler would sacrifice off road capability for fuel mileage standards. In the end, and what we have today, is a Wrangler attempting to both satisfy regulations and maintain its heritage. To save weight, and save solid axles, the JL engineers installed a very light weight, very thin wall (14 gauge), very body-integrated cage system.
The engineers produced an extremely hardened, odd shaped tubular design. In developing our Cage Brace System, we broke virtually every drill bit in our building. The tubing is unlike any material Jeep has ever used, certainly in the occupant safety realm. The shape requires a new way to install a Cage Brace System, and a back to the drawing board approach for us. After a fully year of research and development, we're proud to release our innovative design.
Installation
We promised we'd innovate a no-weld design, and we've done it. Our Cage Brace System strengthens the weak/vulnerable points in the OEM JL cage plus adds functionality. Our System does require some special tools, but does not require welding.
Drilling - The new factory cage material, while only 14 gauge, is hardened. It takes a very slow (300 RPM ideal, 500 RPM max) drill process and a special hardened cobalt drill bit to penetrate. Your big box store drill bits will not work. You aren't required to purchase, but may very well need, an additional Drill Bit Pack.
Specifications
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REVIEWS & CUSTOMER MEDIA
As stated in the description from RockHard4x4—the sport cage that Jeep engineered for the JLs is made of an incredibly hard steel. While I appreciate that Rockhard4x4 ships this harness bar with a special hardened cobalt bit, after spending over 3.5 hours “enjoying the process” (that’s what RH4x4 suggests in their instructions XD ) with their bit and a bunch of oil and making a couple of dimples in the frame, nowhere NEAR making one hole—I was about to give up and ask a buddy of mine to weld it on for me. Then I tried a carbide bit for tile and glass from Home Depot with the same oil. I drilled all 8 holes in 15-20 minutes. Life. Changed. Do yourself a favor, buy yourself two 1/4 carbide drill bits from Home Depot for about $15 each (the extra is just incase you break the tip of the bit as I did after drilling 4 of the 8 holes). I used Diablo brand, but after my experience, I would expect any halfway decent carbide bit to work. Now THAT is a process we can all “enjoy”