HKS LEGAMAX Sports Civic Type R FL5 31021-AH005
JPY 304,700
Please contact us for availability.
Additional information
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A high-performance muffler that combines both “quietness” and “low exhaust pressure”
Full straight structure with low exhaust pressure design.
By adopting Φ75 pipe and full straight structure without restriction, it achieves 30% lower exhaust pressure than OEM. By adopting Φ119 titanium tail with HKS logo, it creates a sporty rear view.
Sound tuning eliminates unpleasant booming sounds.
Valveless design allows you to enjoy a robust sporty sound over the entire range. Sound tuning also eliminates unpleasant booming sounds inside the car, creating a comfortable interior space.
| Certification number | JQR30233117 |
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| Model name | Civic Type R |
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| Model | FL5 |
| Engine type | K20C |
| model year | 22/09 – |
| Muffler shape | Ti (Titan) (LEGAMAX Sports) |
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| Main material | S3/S4L | |
| Tail Outer Diameter | 119 | |
| Intermediate Pipe Diameter | 74.7 → 60.5 × 2 (※1) | |
| Nearby exhaust noise | normal | 84 |
| HKS | 93 | |
| Regarding ground clearance when installed (※2) | Number | 125mm |
| Kit target area | Genuine front under panel | |
| remarks | ||
| HKS product weight | 18.5kg | |
remarks
Comes with a dedicated actuator for mounting to a genuine motor
■ Features
- Since the stock ECU manages the output based on torque, simply replacing the muffler will suppress the output to the stock value. By combining with the Power Editor, the output becomes stock: 340PS_44.3kg･m, LMS: 342PS_44.7kg･m, and by increasing the boost, the output can be improved even further. *Power Editor: 42018-AH013 (for FL5)
- The exhaust pressure is 30% lower than the stock level and the exhaust efficiency has been improved, so by using the Power Editor and reprogramming the ECU, you can expect to see even more power output.
- By making it valveless, the space where the original valve was located is utilized effectively.
- By enlarging the pipe diameter and adopting a straight structure, exhaust pressure is reduced by 30% compared to the original.
- Genuine pipe diameter: φ60 → φ50×2 (valve closed), φ60×1 (valve open)
LMS pipe diameter: φ74.7 → φ60.5×2
Actuator
Actuator + genuine motor
- The genuine muffler uses a valve mechanism, but this product is valveless.
- The risk of error codes occurring due to the valveless design can be avoided by using the included actuator.
- The included actuator reproduces the mechanism of the genuine valve. By attaching the genuine motor, it moves in the same way as the genuine valve, so no error codes will be generated.
- In the FL5, if the stock motor spins freely or is removed, an error code will be recorded. *The check lamp will not light up.
- By connecting a diagnostic device to the OBD, you can check whether or not there is an error code.
- OBD vehicle inspections are scheduled to begin on October 1, 2024. If an error code is recorded during vehicle inspection, your vehicle may not pass the inspection. However, if you use the included actuator, no error codes will be recorded, so you can use it with peace of mind even after OBD inspections begin.
About HKS Muffler
*1: Regarding intermediate pipes,
the Φ number of the intermediate pipe diameter in the muffler is the Φ number of the thickest part in the structure (excluding the shell and the outer diameter of the tail).
*2: When the HKS muffler is installed, the part with the smallest clearance between the HKS muffler (all parts included in the kit) and the road surface is listed. Therefore, it may differ from the minimum ground clearance of the vehicle itself.
The data is basically for vehicles with normal suspension, but please note that some data is for use in combination with low-down springs or height-adjustable suspension kits.
Note: Hooks, brackets, and stays are subject to change without notice.
*Exhaust volume at idling