3" Cat-Back Exhaust for 15-19 WRX STI with Muffler and Resonator

By: Hooker Blackheart03/16/2020 < Back to Blog Home

This 3 inch stainless cat-back exhaust system for Subaru WRX STI maximizes exhaust flow and horsepower while maintaining a comfortable sound level and helping low EGTs. 

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