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SS304 Catback Subaru Impreza Sti 2004 with Valve
2026-01-28
Fupower Announces Revolutionary SS304 Catback Exhaust System for 2004 Subaru Impreza WRX STI with Integrated Valve Technology
January 28, 2026 – Shanghai, China
Fupower Industrial Co., Ltd., a global leader in automotive performance parts and accessories, is thrilled to introduce its latest innovation: the SS304 Catback Exhaust System for the 2004 Subaru Impreza WRX STI, featuring integrated valve technology. Designed to deliver superior performance, reduced emissions, and an exhilarating sound profile, this product redefines aftermarket exhaust solutions for Subaru enthusiasts worldwide.
Engineered for Power and Precision
The new SS304 Catback Exhaust System is meticulously crafted to enhance the iconic 2004 Subaru Impreza WRX STI’s performance without compromising reliability. Key features include:Premium SS304 Stainless Steel Construction: Ensures corrosion resistance and durability, even under extreme driving conditions.
Valve-Controlled Sound System: Features a switchable valve mechanism that allows drivers to toggle between a subtle, refined tone and an aggressive, race-inspired exhaust note.
Maximized Flow Efficiency: A high-flow, mandrel-bent design reduces backpressure, boosting horsepower and torque while improving throttle response.
Direct Fitment: Designed for a seamless OEM-like installation, requiring minimal modification.
Technical Highlights
Compatibility: Tailored for the 2004 Subaru Impreza WRX STI, ensuring perfect fitment and compatibility with stock ECU settings.
Weight Reduction: Ultra-lightweight components lower unsprung mass, enhancing handling and fuel efficiency.
Emissions Compliance: Maintains compliance with OBD-II standards, preserving the vehicle’s emissions certification.
Customizable Tips: Available in polished, brushed, or black chrome finishes to match personal style preferences.
Design Philosophy
The SS304 Catback Exhaust System embodies Fupower’s commitment to blending cutting-edge engineering with driver-centric design. The integrated valve technology not only adds a performance edge but also offers versatility—ideal for daily driving and track days alike.Environmental and Performance Benefits
Reduced Emissions: Optimized exhaust gas recirculation (EGR) and improved combustion efficiency contribute to cleaner emissions.
Enhanced Fuel Economy: Lower exhaust resistance improves engine breathing, resulting in measurable gains in fuel efficiency.
Sound Management: The valve system ensures acoustic control, balancing a sporty sound profile with street-friendly quietness.
Customer Testimonials
"This exhaust transformed my STI’s character! The valve lets me enjoy a mild tone on the way to work and switch to full race mode on the track. Installation was a breeze."— John T., Enthusiast from California
Availability and Pricing
The SS304 Catback Exhaust System for the 2004 Subaru Impreza WRX STI is now available globally through authorized Fupower dealers and its official e-commerce platforms. Pricing starts at $699.99 USD, with a limited-time introductory discount of 15% for pre-orders placed within the next 30 days.About Fupower Industrial Co., Ltd.
Fupower Industrial Co., Ltd., headquartered in Shanghai, is a pioneer in high-performance automotive parts, specializing in exhaust systems, intake kits, and drivetrain components. With a focus on innovation and quality, Fupower serves racing teams, tuners, and automotive enthusiasts across 50+ countries.If you have more questions, write to us
Just leave your email or phone number in the contact form so we can send you a free quote for our wide range of designs!
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Contact person: Frank
Contact number: 0086-18721636174
Email: sales@fupower.com
WhatsApp: 0086-18721636174
Company address: Room 806, Building 17, 2255 Yueluo Road, Shanghai, China
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