The GT4 RS is already a serious car.

But if you’ve spent any time around performance builds, you know there’s always a bit more you can get out of it.

Wing end plates are one of those small upgrades that actually move the needle.

Same idea as the GT3 RS, airflow at the edges of the wing needs to be controlled. If it spills over, you lose efficiency and create drag.

End plates tighten that up.

They help the wing generate more consistent downforce across its full width, which improves rear stability when you’re really pushing the car.

You feel it most in corners and at higher speeds. The rear end just feels more planted, more predictable.

It’s not a flashy upgrade, but it’s a smart one.

Carbon fibre keeps things light, and proper fitment ensures it integrates cleanly with the factory wing.

And from a visual standpoint, it adds just enough aggression to the rear without overdoing it.

Function and form, both handled properly.