HKS | High Flow Sports-Cat Downpipe | Honda Civic Type R | FK8/FL5 2.0T K20C1 | 2017+

The HKS 150 cell sports-cat downpipe is designed to maximise flow and reduce exhaust pressure. The layout follows the stock catalyst design. Using data from the genuine catalysts, repeated trail and error tests were conducted to pursue performance goals. Targeting flow bench testing and internal exhaust emission compliance testing. By enlarging inner diameter and reducing the catalyst cell count to 150 cells, achieves the lowest possible exhaust back pressure.

In flow bench testing, the HKS Metal Catalyser (referred to as the HKS Catalyser) achieved approximately 51% lower exhaust resistance compared to the stock catalytic converter.

Installing the HKS Metal Catalyser with the stock muffler, exhaust resistance is reduced. Power increase can be expected at 3800-6500rpm range. In-house testing achieved maximum improvements over stock.

Power：14kw(19PS)/6100 (kW(PS)/rpm) 
Torque：22Nm(2.3kgm.m)/5700 (Nm(kgf・ｍ)/rpm)

Installing the HKS Metal Catalyser, the increased secondary exhaust pressure can be reduced even when engine speed increases. The lower the exhaust pressure is, the less load required for the same output value, allowing for greater margin. By only replacing the HKS Metal Catalyser, secondary exhaust pressure is reduced by up to 28％ compared to stock. When installing the HKS Catalyser and the LEGAMAX Sports a maximum reduction of 40% compared to stock was achieved!

Installing the HKS Catalyzer, the sound emitted from the muffler will change.
In terms of proximity exhaust, the mid- and high-frequency ranges for both the stock muffler and the HKS muffler (LEGAMAX Sports) (Abbreviation: LMS) has been tuned to produce a sportier sound. While replacing the catalytic converter tends to increase proximity exhaust sound, combining with the LMS ensures compliance with safety standards, providing a worry-free experience.

TECH SPECS

• The OEM part uses a fine-mesh ceramic catalyst (600 cell +400 cell), while the HKS product incorporates a low-density metal catalyst (150 cell x2).
• Utilizing lost wax casting for the outlet, the vehicle-specific design significantly reduces exhaust resistance 
• The exhaust efficiency design and optimal metal ratio achieves both purification performance and low exhaust pressure. Earning official exhaust gas certification from official institutions.
• A specially designed heat shield is included as a countermeasure against heat damaged.
• This product is buffed to a mirror finish and TIG welded. Demonstrating attention to detail.
  
• Stock sound level 84db / HKS Sports Cat - Stock Muffler 87db

COMPATIBLE VEHICLES

• Honda Civic Type R | FK8 2.0T K20C1 | 2017-2022
• Honda Civic Type R | FL5 2.0T K20C1 | 2023+
  

FITTING DETAILS

Dream Automotive offers in-house fitting on all products at our workshop in Luton, Bedfordshire.

AVAILABILITY

Please check prior to purchase