Invidia HS22HS4GD1STL N1 Burnt Ti Cat-Back for 22-25 Honda Civic Si 1.5T

Vehicle Fitment

• 2022-2025 Honda Civic Si (11th Gen, 1.5T, FWD)
• 2023-2025 Acura Integra (1.5T, FWD)

Features

• High-flow N1 cat-back exhaust system designed for performance upgrades
• Mandrel-bent 70 mm stainless steel main piping for improved exhaust flow
• Dual burnt titanium exhaust tips (~101 mm) for a striking visual finish
• N1 muffler design produces a deeper, aggressive exhaust tone
• Improves throttle response, mid-range torque, and overall exhaust efficiency
• Direct bolt-on installation using factory hangers and mounts
• Durable SUS304 stainless steel construction resists corrosion
• Designed to complement both stock and tuned turbo applications

Specifications

• Part number: HS22HS4GD1STL
• Main piping diameter: ~70 mm (2.75")
• Tip diameter: ~101 mm dual burnt titanium tips
• Material: SUS304 stainless steel
• Exit configuration: Dual rear outlets
• Muffler type: N1 performance design

Included Components

• 1x Invidia N1 cat-back exhaust system (HS22HS4GD1STL)
• 2x Burnt titanium exhaust tips (~101 mm)
• Installation hardware (clamps, gaskets, brackets)

Product Description

The Invidia HS22HS4GD1STL N1 Cat-Back Exhaust System is a premium performance exhaust upgrade engineered for the 2022-2025 Honda Civic Si (11th Gen) and compatible with 2023-2025 Acura Integra 1.5T models. Featuring mandrel-bent 70 mm stainless steel piping and a tuned N1 muffler design, this cat-back exhaust improves exhaust gas flow and reduces backpressure compared to the stock system, helping enhance throttle response and mid-range torque.

The dual burnt titanium tips provide a bold visual upgrade while delivering a deeper, more aggressive exhaust note without excessive drone. Constructed from durable SUS304 stainless steel and designed for direct bolt-on installation using factory hangers, this exhaust system is ideal for enthusiasts seeking both performance gains and a more engaging sound. Whether used on the street or with mild tuning, the N1 exhaust balances performance, tone, and style for the 1.5T turbocharged platform.