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Rhino-Rack RJLB1 Backbone Mounting System – Jeep Wrangler JL 4-Door 2018+

$659.99

The RJLB1 Backbone reinforces the hardtop mounting interface on a four-door Jeep Wrangler JL, creating a secure foundation for a compatible Rhino-Rack Pioneer platform. Internal support frames, exterior mounting plates, and fitting hardware work together to transfer rack loads beyond the fiberglass roof shell.

The system weighs 25.1 lb and carries a published Backbone load rating of up to 264 lb, subject to vehicle, road, and rack limitations. This listing does not include the Pioneer platform and is intended for compatible hardtop configurations.

Rhino-Rack RJLB1 Backbone Mounting System – Jeep Wrangler JL 4-Door 2018+ $659.99

Jeep Wrangler JL 4-door — 2018–current (Hard Top / compatible roof configurations)

Engineered for 2018+ Jeep Wrangler JL four-door hardtop applications
Internal frames connect exterior platform mounts to stronger vehicle structure
Includes mounting plates and fitting hardware for the Backbone installation
Backbone assembly weighs approximately 25.1 lb
Published Backbone load capability up to 264 lb/120 kg; vehicle conditions apply
Provides a low-profile base for approved Rhino-Rack Pioneer platforms
Not intended as a complete rack; platform is sold separately
Protected by Rhino-Rack's 5-year warranty

Brand: Rhino-Rack
Part Number: RJLB1
Product Type: Vehicle-specific Backbone mounting system
Vehicle Fitment: Jeep Wrangler JL 4-door — 2018–current (Hard Top / compatible roof configurations)
Mounting Status: Supporting mounting component
Application: For compatible Pioneer platform-only Wrangler JL builds
Backbone weight: 25.1 lb
Structure: Internal support frames + mounting plates + fitting hardware
Max published Backbone load: Up to 264 lb / 120 kg; vehicle/load conditions apply
Warranty: 5 years

Shipping & Delivery

Shipping costs vary by product, size, weight, and delivery location and are calculated at checkout.

Most orders process within 1–3 business days. Estimated delivery after shipment is typically:

  • Standard shipments: 3–7 business days
  • Large or freight shipments: 5–12 business days

Oversized products such as rooftop tents, bumpers, roof racks, and storage systems may ship via freight carrier. Freight deliveries may require an appointment, and curbside delivery may be standard.

Tracking information will be provided when available. Multi-item orders may ship separately from different warehouses.

Please inspect freight deliveries for visible damage before signing whenever possible and report damage to us within 48 hours of delivery.

For complete details, please see our Shipping Policy.

Returns & Exchanges

Most eligible products may be returned within 30 days of delivery.

To qualify for a return, products generally must be:

  • Unused and uninstalled
  • In new, resalable condition
  • In the original packaging
  • Complete with all original parts, hardware, accessories, and documentation
  • Approved for return by Overland Wanderers before being shipped back

Customers are generally responsible for return shipping costs unless the product arrived damaged, defective, or incorrect. Original shipping charges are generally non-refundable.

Some products may be non-returnable or subject to restocking fees, including certain special-order, custom, made-to-order, final-sale, or manufacturer-restricted products.

Exchanges: We generally handle exchanges as a return followed by a new order. This helps ensure the replacement product is available, correctly priced, and compatible with your vehicle. Contact us before returning your item and we'll help you determine the best next step.

If your order arrives damaged, defective, or incorrect, please contact us within 48 hours of delivery and keep all original packaging and shipping materials.

To start a return or exchange, contact us at info@overlandwanderers.com before sending anything back.

For complete terms and exclusions, please see our Return & Refund Policy.