Remark R1-Spec Full Titanium Catback Exhaust w/ Resonator 2015-2021 WRX / 2015-2021 STI Injen-InStock designed to capture dirt while

designed to capture dirt while maintaining superior airflow for increased horsepower and torque

Perrin Performance focuses on delivering parts that enhance both reliability and performance

Multi-layered steel construction

but optimized for improved exhaust flow and throttle response

Remark R1-Spec Full Titanium Catback Exhaust w/ Resonator 2015-2021 WRX / 2015-2021 STI Injen-InStock designed to capture dirt whileDeveloped for those seeking a light weight high flow single exit exhaust system. This full Titanium system only weighs 17lbs (w resonator), which is ~22lbs. lighter than the OE exhaust. The R1 Spec features 3. 0" mandrel bent piping, high flow straight through muffler, and 4. 5" slant cut tip. The piping layout favors an optimal flow path to reduce the amount of restriction. Available with or without a resonator located on the midpipe. Select the