Shanghai, China — January 27, 2026 — Fupower Industrial Co., Ltd., a leading developer of premium automotive aftermarket parts, today announced the launch of its SS304 Subaru Impreza STI Cat-Back Exhaust System for the iconic 2004 Subaru Impreza WRX STI. Engineered to deliver a dramatic boost in performance, refined sound, and enhanced aesthetics, this new product marks another milestone in Fupower’s commitment to empowering automotive enthusiasts worldwide.
Product Highlights
The SS304 Cat-Back Exhaust System is designed for drivers seeking a seamless blend of raw power and sleek styling. Key features include:
Premium 304 Stainless Steel Construction: Built to withstand extreme temperatures and corrosion, ensuring longevity and reliability under high-stress conditions.
Engineered Performance: Optimized for the 2004 Subaru STI’s 2.5L turbocharged engine, the system improves airflow for +15-20 horsepower gains, while maintaining drivability for both street and track use.
Tailored Sound: A free-flowing resonator design delivers a deep, aggressive exhaust note without intrusive drone, balancing aggressive performance with daily drivability.
Customizable Style: Available in polished stainless steel or black ceramic coating, the system complements the STI’s aggressive stance.
Design Philosophy
“Enthusiasts don’t just want power—they want authenticity,” said Alex Chen, Fupower’s Chief Engineer. “The SS304 exhaust system reflects our focus on precision engineering. By refining every component from the catalytic converter backward, we’ve maximized flow efficiency while staying true to the STI’s legendary character.”
Technical Specifications
Material: 3.0mm 304 stainless steel tubing with brushed finish.
Hardware: Pre-installed gaskets, clamps, and high-temp silicone hoses for easy installation.
Fitment: Direct-fit design for the 2004 Subaru Impreza WRX STI (EJ25 engine only).
Weight Reduction: 30% lighter than OEM systems, enhancing power-to-weight ratio.
Availability and Pricing
The SS304 Subaru Impreza STI Cat-Back Exhaust System will be available globally starting February 15, 2026, through Fupower’s official retailers and website. Priced at $1,299 USD, it comes with a 5-year warranty against manufacturer defects.