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Want the rear of your GX470 to look like the optioned-up models without paying dealer prices? A trunk wing is the fastest way to get there. The factory-style rear trunk wing spoiler for the 2004-2009 Lexus GX470 copies the factory wing shape and sits on the top edge of the tailgate.

It arrives in matte black ABS with the mounting kit in the box. You decide the finish: keep it black, or paint it to match your truck. This guide covers both paths.

What a trunk wing actually does

Start with the honest answer: on a heavy SUV like the GX470, a trunk wing is mostly a look. It sharpens the rear view and breaks up the big flat tailgate panel. The aero gain is real but modest.

Here is the part that does work. Moving air presses on the wing as you drive, which is called downforce — air pushing the rear of the truck down. A little more downforce keeps the tail settled at highway speed.

In day-to-day driving that adds up to:

• A more planted feel on long highway runs
• Less tail float in crosswinds
• A finished, factory-option rear profile

Why ABS, and why it ships in matte black

The wing is molded from OE-type ABS, the same family of plastic the factory uses for exterior parts. It flexes with heat and vibration instead of fighting the panels around it. That matters on a tailgate that opens thousands of times over the life of the truck.

Matte black is the primer state, not the final word. Keep it black for a stealth look, or hand it to any body shop for a color match. Painting one wing is an afternoon job.

Specs at a glance

How the install works

Straight talk first: yes, this install drills holes. A wing needs real fasteners on a tailgate, and the template in the kit shows exactly where they go. Measure twice — the holes are permanent.

1. Wash and dry the top edge of the tailgate so the template tape sits flat.
2. Tape the template in place and mark the drill points.
3. Drill the marked holes and deburr the edges.
4. Run a bead of adhesive sealant along the mounting surface.
5. Set the wing down, align it, and secure it with the kit hardware.
6. If your wing has the brake light, route and connect the wiring before final tightening.

Time budget: most DIYers finish in two to three hours. A shop that does this weekly needs one to two.

The sealant step is the one people rush. It is what keeps water out of the holes you just drilled. Take the extra two minutes.

Factory style or genuine Lexus part?

The factory wing was an option on these trucks, and genuine ones are scarce and priced like it. The factory-style version exists to close that gap. Here is how the two compare:

• Price: far below a genuine Lexus part
• Material: OE-type ABS on both sides
• Fitment: molded to sit flush on the GX470 tailgate
• Finish: this one ships ready for paint; genuine units arrive factory painted
• Availability: in stock now, versus limited stock

Prefer the painted-from-the-start route on a newer Lexus? Read the painted ABS roof spoiler guide for the 2014-2019 Lexus IS. It walks the paint-match process end to end, and the same logic applies to this wing.

While the tailgate is open, look lower

A 2004-2009 GX470 is a fifteen-to-twenty-year-old truck now. Rear brake wear is common at this age, and you are already standing at the back of it. Two checks take ten minutes and prevent a bigger bill.

• A spongy pedal or uneven bite usually points to tired calipers
• A lip you can feel on the rotor edge means the discs are next

If the pedal feels soft, these front brake calipers for the 2003-2009 GX470 and Toyota 4Runner are a straight swap. Do the pair, not just one side.

If the rotors are lipped or scored, this rear rotor pair for the 2003-2009 GX470 and 2001-2007 Sequoia covers the axle in one order. Pair fresh rotors with the spoiler job and the truck leaves the garage renewed front to back.

Body panels, trim and exterior hardware for the same trucks sit in the body parts collection.

Frequently asked questions