Rhino-Rack Jeep Wrangler JL Unlimited 4 Door Hard Internal Structural Roof Rack/Bare Backbone 3 Base Mounting System in Black
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Availability:
Only 1 left in stock, order soon!
Arrives
Sep 7 – Sep 9
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Style: Fits Jeep Wrangler Jl 4Dr 3Base
Features
- INCREASED CAPACITY - Strengthen your Jeep Wrangler JL Unlimited hard top so that you can mount a Pioneer Platform & increase your cargo capacity. The Backbone adds structural strength, enabling a higher roof load limit & improves cargo carrying ability.
- THREE MOUNTING POINTS - The three mounting points on each side of the roof system add mountable capacity and weight distribution for a Rhino-Rack Pioneer Platform, Vortex Bars or Heavy Duty Bars. Perfect for Jeep Wrangler accessories.
- NO INTERFERANCE - Won't interfere with the removal of your Freedom panels or hard top, since the kit bolts to your hard top both internally with the reinforced structure and externally via the mounting brackets.
- CARRY MORE - 76% More load capacity (114lbs more) is what you get compared to a roof rack mounted directly to the hard top. The factory non-stationary cap is 150lbs, which means you get an additional 114 lbs carrying capacity with the Rhino-Rack Backbone.
- INTERNAL BRACKETS install around the window frame and bear the weight from the roof, carrying the load from the roof down into the vehicle's steel body, greatly reducing the roof load pressure. Parked max load is 795 lbs. Moving max load 265 lbs.
- INSTALLATION - Single person installation. Instructions included, video also available online. Some drilling required. All hardware included. Get your setup ready for Jeep accessories.
- ADD A PIONEER PLATFORM - We recommend adding the best Jeep accessory: the Rhino-Rack Pioneer Platform for maximum roof usage. Use SKU 52108F for the best fit, sold separately.
- FOR CROSSBARS - works with Rhino-Rack legs RLCP (x2) or RLT600 for crossbar mounting. Legs, spacer kits & Pioneer Platform are sold separately, as each person may wish to customize their setup to their needs.
- FIVE YEAR WARRANTY - We stand behind our product quality and offer a 5 Year Manufacturer Warranty for peace of mind. Quality matters. Our products are engineered to withstand some of the harshest conditions on Earth. Designed and engineered in Australia.
- ADVENTURE - At Rhino-Rack, we believe theres an adventurer in all of us. Its what drives us to create world-ready outdoor gear, born and proven in Australia. We believe life is better when we Make Space for Adventure.
Description
The Rhino-Rack backbone is an interior structure set up on the inside of the Jeep JL Wrangler. Three plates on each side of the Jeep's hard top are connected with the interior frame extending your roof line to carry heavier loads with the max Load rating of up to 120kg or 264lb.
Color: Black
Vehicle Service Type: SUV
Material: Aluminum
Brand: Rhino Rack
Item dimensions L x W x H: 28 x 24 x 6 inches
Item Weight: 13.97 Kilograms
Is Foldable: No
Load Capacity: 150 Pounds
Mounting Type: Internal Structural Mount
Global Trade Identification Number: 80
Brand Name: Rhino Rack
Global Trade Identification Number: 80
Manufacturer: Rhino-Rack
Manufacturer Part Number: RJLB1
Model Number: RJLB1
Item Type Name: Backbone for Pioneer Platform
Included Components: 1x RJLB1 Backbone Kit, Complete, Installation Hardware, Installation Instructions
Manufacturer Warranty Description: 5 Years
Compatible with Vehicle Type: SUV
Is Foldable: No
Load Capacity: 150 Pounds
Mounting Type: Internal Structural Mount
Color: Black
Material Type: Aluminum
Item Dimensions: 28 x 24 x 6 inches
Item Weight: 13.97 Kilograms
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sep 7 – Sep 9
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
This was a great upgrade. I made my own roofrack that bolts to the backbone system. And the braces inside that transfer the weight to the body are nice to hang stuff from and use them to secure camping gear. I used butyl to seal the holes in the hardtop and haven't had any leaks.
Reviewed in the United States on December 6, 2025 by Jonathan Manier
Received in a few days. Had an issue and the seller was on top of it.
Reviewed in the United States on May 30, 2026 by Steve
Fantastic product. Very well-designed. Not too difficult to install. If you're looking for a strong sleep design, this is what you need.
Reviewed in the United States on March 24, 2025 Reviewed in the United States on March 24, 2025 by Richard Morin
Installed on my Jeep Wrangler JL. Very sturdy mount for a roof rack. 800# Static load, 264# Dynamic load.
Reviewed in the United States on September 15, 2024 by txlady
I bought the Rhino-Rack that was supposed to be for my 2016 Jeep Wrangler 4dr. And the instructions were fantastic instructions if you have the exact model of Mopar hard top that the Rhino company built this for. Unfortunately, not all Mopar hard tops are created the same. This frame was created for a Mopar top that has a rear window that has around a 20 degree slant on the rear window from vertical. My hard top is completely vertical and a genuine Mopar part. On its own, the jeep hard top does not support weight and you must find a way to transfer your load on the roof to the frame of the jeep. This is the only one that I could find that would provide the structural support necessary and did not require you to remove the hard top. My modifications: Two of the three bolt holes on the base frame lined up and I had to drill the third hole. I had to grind a small section of the rear end of the frame to make it fit in the space and I had to use sections of Unistrut to make up the 20 mm difference between the frame of the jeep and the bottom of the Rhino Rack structure. The forward mount is normally supported by the roll bar, but I would have had to remove the hard top to access that part of the frame. Of course none of the frame bolts were long enough and I installed black stainless versions. Because I was doing this by myself, removing the top was not an option. Instead I mounted the forward mound on the roll bar around 6" to the rear (of the position designated in the instructions) where I had access. The forward mount would also not fit as designed in the gutter of the roof over the doors. Since it was not structural and only used for positioning, I cut the bracket above the logo on both forward mounts and drilled the mounting holes for the front bracket from the inside of the jeep after attaching the bracket to the roll bar. In my redesign, every mount is tied into the frame of the jeep and the forward mounts are attached to the roll bar. I repainted everything before reassembling and it looks good. I have transported my boat around several times with no issues and it is locked down tight. This took 3 days to complete and if I did not have a rather complete metal shop; it would not have been possible. If you have a slanted rear window on your Mopar hard top, this is extremely well designed and will likely work out of the box. However I did not. Once I started making modifications, I realized returning the unit was not an option and I had to make it work. It suits my purposes perfectly but unless you have a metal shop and a whole lot of patience, you probably should not purchase this item.
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Reviewed in the United States on February 16, 2026 by Frank Wood
Overall easy install just follow the directions and watch YouTube. Great low profile look after installed.
Reviewed in the United States on October 23, 2022 by Will
The system is excellent on fit. Just make sure you purchase the correct model for your vehicle. Installation instructions i give 2 out of 10. Very cartoonish and does can be confusing. What I did like was the parts layout board. Once unpackaged, you layout all the parts and pieces on to a board and just select the part you will be working on. Although it would be a lot more helpful is the parts were stamped with the corresponding layout board. Installation is scary as you will be drilling a total of 12 holes into the Jeep fiberglass top. I installed the back-bone system while my top was on the jeep but i think it would be easier to install if you take the top off for drilling and securing the bolts. Sort of need to contorque yourself and the roll bar cage make it difficult to install the bolts and washers (i've dropped a few and lost the washers). The other item which Rhino-Rack needs to change is after drilling the holes and before installing the hardware, Rhino-Rack says to put butyl mastic around the holes for water tightness. That stuff makes a mesh and can get onto places you don't want. I used FlexSeal which came in a small push bottle. This way you are not buying a tube of butyl and caulk gun for such a small amount you would need. Rhino-Rack should list acceptable sealants (doesn't need to be by manufacturer name). There are a few videos on the internet on how to install the back-bone system and highly recommend you watch those before and while you are performing the install.
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Reviewed in the United States on January 10, 2021 by HomeImpv Guy
Great rack. Perfect for my use
Reviewed in the United States on May 29, 2021 by Larry E.