Rear Bumper Diffuser / Spoiler Fin Set (4 Fins) For 2015-2021 Subaru WRX STI

About This Product

This is an aggressive-looking rear diffuser fin set for the 2015-2021 Subaru WRX STI. Made by SDeelCase in the USA, it's a set of four black plastic (ABS) fins that attach to the lower rear bumper. It's sold as a complete package with the fins and the needed screws. It's a custom/performance fitment part, which means it's not a simple clip-on - drilling into your bumper is required for installation (so be ready for that, or have a shop do it). It gives your STI that mean, race-inspired JDM look with canard-style extensions. It's brand new in the box and even comes with a manufacturer's warranty. If you're aiming to stand out from every other WRX on the road, this diffuser fin kit will definitely do the trick.