Invidia HS22HS4QD1RSL Q300 Cat-Back Exhaust System 70mm Dual Rolled Stainless Tips

The Invidia HS22HS4QD1RSL Q300 Cat-Back Exhaust System is a premium performance exhaust engineered specifically for 2022-2025 Honda Civic Si and 2023-2025 Acura Integra Base models with the 1.5L turbocharged engine. This system delivers a perfect balance of enhanced performance and refined sound quality, making it ideal for enthusiasts who want improved flow without excessive volume.

Key Features:

• 70mm (2.75-inch) mandrel-bent piping for maximum exhaust flow and reduced back pressure
• 110mm dual rolled stainless steel tips for an aggressive, polished appearance
• SUS304 high-grade stainless steel construction throughout the entire system
• CNC-machined flanges and precision robot TIG welding for superior fitment and durability
• Flat-bottom muffler design with Advantex material for optimized backpressure
• Specially tuned resonators and baffles for deep, mellow exhaust tone without drone
• Direct bolt-on installation using OEM mounting locations

Performance Benefits:

• Increased horsepower and torque across the powerband
• Enhanced throttle response and reduced turbo lag
• Improved exhaust gas flow with minimal restrictions and turbulence
• Rich, deep sporty sound that enhances the engine's natural tone

The Q300 series represents Invidia's refined performance exhaust line, engineered to provide a quieter sound profile compared to their N1 and R400 systems while maintaining excellent flow characteristics. The continuous piping design and strategic placement of resonators ensure optimal performance without sacrificing daily drivability. Complete with all necessary gaskets and hardware for installation.