Perrin Boost Tube Kit (Red)- Subaru WRX VA All This kit the largest inlet

This kit the largest inlet pipe available and offers over a 50% increase in airflow volume in comparison to the factory inlet pipe

Industry first (and patent pending) DOHC EJ Cylinder 4 Combustion Chamber Cooling kit increases coolant flow in the LH head to improve reliability by reducing detonation causing hot spots

Dive planes also help seal the sides of the car and help evacuate air from the wheel well

but also adds a bit of flair with anodized PERRIN washers

and other liquids may damage the filter and must not be used to clean the filter

Perrin Boost Tube Kit (Red)- Subaru WRX VA All This kit the largest inletSwap out your overheated factory top mount intercooler for the PERRIN Front Mount Intercooler to get the most out of your turbocharged STI. Add power and a new bold look all in one. If you don't already have a PERRIN Front Mount Intercooler Core, make sure you do.