Perrin Front Mount Intercooler Core and Beam Black WRX / STI (2008-2014) Mazda GrimmSpeed's AOS uses a baffling

GrimmSpeed's AOS uses a baffling system that is unique to their unit only and does not allow oil back out of the can

The larger profile feels great in your hand and allows more of your hand to engage with the knob

A full axle set requires both a left and right rotor

Designed for 500hp to 800hp applications

you need to upgrade any factory bushing you can

Perrin Front Mount Intercooler Core and Beam Black WRX / STI (2008-2014) Mazda GrimmSpeed's AOS uses a bafflingThe Perrin Front Mount Intercooler (FMIC) kits for the Subaru WRX STI are massive upgrades. Designed for 500hp to 800hp applications, Perrin's enormous bar and plate intercooler core will not disappoint. Cast aluminum end tanks and a high flow core ensure even airflow and an optimized intake charge. Perrin's STI FMIC kits mount to their powder coated boxed steel replacement bumper beam with 1 2" thick mounting plates, so there is no cutting of the