Rhino-Rack RJLB1 Backbone 3 Base Mounting System for Jeep Wrangler JL

The Rhino-Rack RJLB1 Backbone Mounting System is an interior structural reinforcement designed specifically for Jeep Wrangler JL 4-door models with factory hardtops. This innovative system extends your Jeep's roofline from the inside, enabling you to mount a roof rack system and carry significantly heavier loads than the factory hardtop alone.

Key Features:

• Maximum load capacity of 264 lbs (120 kg) - 76% more than factory hardtop capacity
• Three mounting plates on each side connect to interior frame for superior strength
• Compatible with Rhino-Rack Pioneer Platform, Vortex Bars, or Heavy Duty Bars (sold separately)
• Eight total mounting points for optimal weight distribution
• Does not interfere with Freedom panel or hardtop removal
• Constructed from high-quality aluminum and stainless steel
• 5-year manufacturer warranty

What's Included:

• Front left and right upright castings
• Rear left and right upright castings
• Left and right horizontal castings
• Complete installation hardware

Installation requires drilling and takes approximately 2-3 hours with light to moderate mechanical skill. The Backbone system provides the structural foundation needed to transform your Jeep into a capable adventure vehicle, perfect for carrying bikes, kayaks, camping gear, and other outdoor equipment safely and securely.