Description
Experience the perfect balance of aggressive sound, increased performance, and cabin comfort with the HKS Legamax Sports Exhaust System, specifically engineered for the 2023-2025 Honda Civic Type R FL5 equipped with the K20C engine. This high-performance exhaust system delivers a bold motorsport-inspired aesthetic and performance gains, thanks to its valveless construction and enlarged pipe design.
Crafted from high-grade SUS304/SUS304L stainless steel, this exhaust ensures durability, heat resistance, and long-term reliability. The full straight φ75 design with dual φ60.5 outlets enhances exhaust flow, contributing to a 30% reduction in back pressure compared to the factory system. The φ119 titanium tail tips, finished with the HKS logo, add an aggressive and stylish rear appearance.
Despite the valveless design, the included actuator mimics the OEM valve function to avoid error codes during OBD diagnostics. This makes it suitable for regions with upcoming OBD compliance, such as Japan from October 2024. The system also maintains a refined and sporty tone without excessive noise, ensuring comfort during daily driving and spirited runs alike.
For those seeking maximum performance gains, pairing this exhaust with the optional Power Editor (HKS Part No. 42018-AH013) allows for optimized ECU tuning, further enhancing output and throttle response.
Key Features:
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Full Valveless Design – Eliminates factory valve mechanism for increased space and improved flow.
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Enlarged Pipe Diameter – φ74.7 main pipe transitioning to dual φ60.5 outlets for optimized exhaust velocity.
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Reduced Exhaust Pressure – Achieves approximately 30% reduction in back pressure versus stock.
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SUS304/SUS304L Stainless Steel – High-strength, corrosion-resistant materials for long-term durability.
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Aggressive Styling – Features φ119 titanium tail tips with laser-etched HKS logo.
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JQR Certified – Complies with Japanese road regulations (Certification No. JQR30233117).
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Cabin Comfort – Engineered for a sporty yet controlled sound experience with idle at 73dB.
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ECU Friendly – Included actuator prevents CEL and diagnostic errors during inspections.
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Compatible with Power Editor – Further increases performance through ECU tuning (sold separately).
Fitment:
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Vehicle Make: Honda
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Model: Civic Type R
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Chassis Code: FL5
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Model Years: 2023, 2024, 2025
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Engine: K20C 2.0L Turbocharged Inline-4
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Drivetrain: FWD (Front-Wheel Drive)
Specifications:
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Product Code: 31021-AH005
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Certification Number: JQR30233117
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Outer Tail Diameter: φ119
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Main Pipe Diameter: φ74.7 → φ60.5 ×2
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Factory Noise Level: 84dB (Idle: 59dB)
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HKS Noise Level: 93dB (Idle: 73dB)
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Minimum Ground Clearance: 125mm (with factory front under panel)
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Material: SUS304/SUS304L Stainless Steel
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Valve Mechanism: None (valveless design with actuator)
Upgrade your Honda Civic Type R FL5 with the HKS Legamax Sports Exhaust System and unleash its full potential with increased power, reduced back pressure, and an exhilarating exhaust tone.
