GReddy Supreme SP Cat-Back Exhaust – Honda Civic Type R FK8 2017–2021 | 10158214

GReddy Supreme SP cat-back exhaust system for the 2017–2021 Honda Civic Type R FK8. 304 stainless steel construction throughout, sport-tuned sound profile with reduced interior drone compared to open exhausts, and GReddy’s signature polished tip finish. A flagship exhaust fitment from one of the most respected names in the Honda performance tuning community. Ships fast across Canada and the US.

GReddy Supreme SP — Sound, Quality, and Character

The Supreme SP is GReddy’s premium cat-back exhaust line, engineered to deliver a genuine sport exhaust character without the cabin drone and harshness of straight-pipe or race-spec systems. GReddy’s SP (Special Performance) tuning targets an exhaust note that is assertive under acceleration and at high RPM — where the FK8’s K20C1 builds its power — while remaining composed at idle and highway cruise speeds. 304 stainless steel tubing and polished tip finish are standard throughout the Supreme SP line. For the FK8 Type R community, the GReddy Supreme SP is one of the benchmark cat-back choices — a proven fitment on a car where the OEM exhaust is already well-regarded, and where the aftermarket upgrade needs to deliver genuine improvement in character and sound quality to justify the investment.

FK8 Type R — Why Upgrade the OEM Exhaust

The FK8 Civic Type R ships from the factory with a well-engineered triple-exit exhaust system that already produces a sport character relative to standard Civics. The case for upgrading to the GReddy Supreme SP is sound quality refinement, a more prominent exhaust note across the RPM range (particularly in the mid-to-upper band where the K20C1 is most alive under boost), and the aesthetic upgrade of a premium aftermarket tip finish. The Supreme SP is not primarily a power-seeking modification on a stock FK8 — it is a character and quality upgrade. For buyers primarily seeking power gains, a downpipe upgrade is a higher-priority modification on the FK8 platform.

304 Stainless Steel Construction

The Supreme SP is built from 304-grade stainless steel — the standard for premium aftermarket exhaust systems. 304 stainless provides excellent corrosion resistance in road salt, moisture, and heat-cycling environments, and maintains structural integrity and finish quality significantly longer than aluminized steel alternatives. For a flagship exhaust at this price point on a halo performance car, stainless construction is the appropriate specification.

FK8 vs FL5 — Generation Confirmation

The FK8 Civic Type R was sold in North America from 2017 through 2021. The 2022+ Civic Type R is the FL5 generation — a different chassis, different exhaust routing, and different fitment specification. This GReddy 10158214 exhaust is for the FK8 only. If you own a 2022 or newer Type R, this system will not fit. Confirm your Type R generation (FK8 or FL5) before ordering.

FK8 only — 2017–2021 Honda Civic Type R. Not compatible with FL5 (2022+). Professional installation recommended. Confirm tip configuration against your bumper opening before ordering.

Specifications

• Brand: GReddy
• Part Number: 10158214
• Series: Supreme SP
• Type: Cat-back exhaust system
• Material: 304 stainless steel
• Application: 2017–2021 Honda Civic Type R FK8 — K20C1 2.0T
• Shipping Weight: 57 lbs