Flowmaster 70 Series 2.25" Dual In 2.25" Dual Out Universal Chambered Muffler 2015-2021 Subaru WRX STI 0" Heavy Duty 16" Drop

0" Heavy Duty 16" Drop or Rise Hitch is unlike any of our competitors' products

This plug-in tuning module does not require any modification to the PCM and is 50 state emission legal

stability and our detent adjustment system allows for accurate and simple tuning of boost pressure

8L engines

Flowmaster 70 Series 2.25" Dual In 2.25" Dual Out Universal Chambered Muffler 2015-2021 Subaru WRX STI 0" Heavy Duty 16" DropThe 70 series utilizes Flowmaster's Delta Flow technology and an enlarged case for improved sound control along with mileage and power gains. Perfect for use on trucks, SUV's, RVs, tow vehicles and high performance street cars where space allows. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Features: Minimal interior resonance Mild to stock exterior exhaust tone Improved Horsepower, Torque and Engine Efficiency