Answer
Mar 11, 2026 - 12:59 PM
The Rhino-Rack RJLB1 Backbone 3 Base Mounting System will fit a 2024 Jeep Wrangler Rubicon 4xe, as long as your Jeep is the 4-door Wrangler JL with a factory hardtop.
Fitment
This Backbone system is designed for:
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2018–2026 Jeep Wrangler JL 4-Door models
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Including trims like Rubicon, Sahara, Sport, and 4xe
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Requires the hardtop roof (it mounts through the hardtop into the internal frame).
What this part actually does
The RJLB1 is not a full roof rack by itself. It is the internal support structure that strengthens the roof so you can mount Rhino-Rack crossbars or a Pioneer platform. It distributes the load through the vehicle frame and supports up to about 120 kg / 264 lb dynamic load depending on the full rack setup.
What you still need
To make a complete roof rack system, this backbone is usually paired with:
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Rhino-Rack RLT600 Quick Mount Legs
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Vortex or Heavy-Duty crossbars, or
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A Rhino-Rack Pioneer Platform
Source: mytruckpoint.ca
