Comprehensive Install Guide for the Prinsu PRO Roof Rack for Lexus GX550 and 2024+ Toyota Land Cruiser
The Prinsu PRO Roof Rack for the 2024+ Lexus GX550 and Toyota Land Cruiser 250 is a versatile, low-profile rack that enhances your vehicle's utility. Whether you're an overlander, adventurer, or outdoor enthusiast, this roof rack is built to handle your gear with ease. Below, we’ll walk you through a detailed step-by-step installation guide to help you mount your new rack confidently.
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What’s Included in Your Prinsu PRO Roof Rack Kit
Before starting, confirm you have the following components:
- Side rails (driver and passenger sides)
- Crossbars (one with a flat underside for the wind deflector)
- Mounting brackets (labeled #1, #2, and #3)
- Wind deflector with noise-reducing edge trim
- Aluminum spacers
- Rubber washers
- Stainless steel hardware (bolts, washers, nuts)
- Vibra-Tite threadlocker
Tools You’ll Need
- Screwdriver or drill with a 5/32” hex bit
- T-30 torque bit
- Side-cutting pliers
- 10mm, 12mm, and 13mm sockets
- Flathead screwdriver
Step-by-Step Installation Process
Step 1: Prepare Your Workspace and Components
- Unpack all parts and lay them out to form a rough outline of how the rack will sit on your vehicle.
- Verify that all hardware and mounting brackets are included.
Step 2: Assemble the Side Rails and Mounting Brackets
- Identify the mounting brackets labeled #1 (front), #2 (middle), and #3 (rear).
- Attach bracket #1 to the inner side rail recess using the included bolts and a 5/32” hex bit.
- Repeat the process for brackets #2 and #3. Ensure each bracket is securely fastened.
Step 3: Install the Crossbars
- Secure the crossbars to the side rails using the button-head socket bolts.
- Ensure the drop-in points on the crossbars face upwards. Avoid placing a crossbar over a mounting foot.
- Set aside the special flat underside crossbar for later use with the wind deflector.
Pro Tip: If you’re installing the rack solo, attach the crossbars once the rack is on the vehicle for easier handling.
Step 4: Remove the Factory Roof Rack (if applicable)
- For vehicles with a factory roof rack:
- Use a 13mm socket to remove the mounting bolts and disassemble the rack.
- For vehicles without a factory roof rack:
- Remove the plastic covers over the mounting holes using a flathead screwdriver.
Step 5: Prepare the Mounting Surface
- Place the rubber washers over the factory mounting holes to protect your roof.
- Set an aluminum spacer on top of each rubber washer to prepare for rack placement.
Step 6: Mount the Prinsu PRO Roof Rack
- Lift the partially assembled rack onto your vehicle. Align it with the mounting holes.
- Apply RTV silicone into the spacers to seal against moisture and prevent leaks.
- Thread the mounting bolts through the washers and into the holes. Hand-tighten them initially.
- Once all bolts are in place, tighten them securely with a 13mm socket.
Step 7: Attach the Wind Deflector
- Insert T-nuts into the wind deflector crossbar, ensuring the flush side faces up. Align the T-nuts with the deflector’s holes.
- Prep the Phillips head bolts with washers and apply Vibra-Tite threadlocker.
- Secure the wind deflector to the crossbar with the bolts.
- Install the noise-reducing edge trim along the bottom of the deflector and trim any excess with side-cutting pliers.
- Mount the wind deflector onto the rack.
Step 8: Install Weatherstripping
- Hold the weatherstripping alongside the rack and mark areas where it intersects with mounting points.
- Use side-cutting pliers to trim the weatherstripping at the marked spots.
- Reinstall the trimmed weatherstripping for a clean, finished look.
Final Checks and Tips
- Verify all bolts are tightened to their specified torque:
- 17 ft-lbs for M8 mounting bolts
- 8 ft-lbs for 1/4" hardware
- Check the silicone sealant around the spacers to ensure no gaps remain.
- Test the rack's stability by gently shaking it—there should be no movement.
Why Choose the Prinsu PRO Roof Rack?
The Prinsu PRO Roof Rack offers unmatched durability with a 600-lb dynamic load capacity and a 1,000-lb static load capacity. Its low-profile design minimizes wind resistance, while its modular system lets you attach accessories like rooftop tents, light bars, and storage solutions.
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Upgrade your Lexus GX550 or Toyota Land Cruiser 250 with a Prinsu PRO Roof Rack:
With this install guide, you can confidently enhance your vehicle’s functionality and appearance. If you have questions or need support, OffRoadUSA is here to help!