Perrin Performance Boost Tube Box w/ Red Boost Tubes and Black Couplers 2015-2021 WRX YMM_1990_Legacy improving overall vehicle balance and

improving overall vehicle balance and handling

Durable Construction: Made from high-quality Delrin

Shop now at Subimods to enhance your Subaru’s look and performance with trusted aftermarket parts

while the exhaust valves are made from XH-426 stainless steel

these mud flaps combine function and form

Perrin Performance Boost Tube Box w/ Red Boost Tubes and Black Couplers 2015-2021 WRX YMM_1990_Legacy improving overall vehicle balance andPerrin Performance Boost Tube Box w Red Boost Tubes and Black Couplers 2015 2021 WRX 2. 25" Aluminum Tubing Boost Tube Kit Overview The Perrin Performance Boost Tube Box is a precision engineered upgrade designed specifically for the 2015 2021 Subaru WRX equipped with a Perrin front mount intercooler core. This kit replaces the restrictive OEM boost tubes with CNC mandrel bent aluminum tubing, featuring a smooth 2. 25" diameter for optimal airflow.