The ARK Performance Subaru WRX STI Exhaust will elevate your driving experience. Performance, power, and sound are optimized with this premium exhaust system designed specifically for the WRX STI. The ARK Performance Exhaust is precision-crafted and made of high-quality materials, which contributes to a noticeable increase in horsepower and torque. As well as enjoying improved throttle response and overall engine efficiency, enjoy a thrilling and aggressive exhaust note. The ARK Performance Exhaust delivers impressive performance enhancements and adds style with its sleek design and impeccable fitment.