MBRP Pro Series 3" Cat-Back Exhaust - Street Version | 2015-2021 Subaru WRX/STI (S4800)MBRP Pro Series 3" Cat Back Exhaust Part #: S4800304 Overview The MBRP Pro Series 3" Cat Back Exhaust system is designed to enhance the sound and performance of your Subaru WRX or STI from 2015 to 2021. Crafted for enthusiasts who seek a bold, aggressive tone without sacrificing daily drivability, this exhaust offers a perfect balance of street and race characteristics. Made from high quality materials, it features a durable construction that