The PERRIN license plate backer is made for 2018‑on Subaru WRX and STi models as a direct‑fit rear license plate holder backer. It provides a finishing accessory that pairs with the vehicle’s rear mounting points and is offered by Perrin Performance to match the 2018+ WRX/STi lines where front or rear mounting needs a model‑specific backer.
PERRIN 2018+ Subaru WRX/STi License Plate Holder Backer