![Apexi N1-X Evolution Extreme Catback Exhaust 2017-2021 Honda Civic Si [FC1/FC3] (164KH002) 1641 Air enters the system through](https://cdn.shopify.com/s/files/1/0592/8642/1591/files/ShowProductImage_39a8f0f3-da3b-4f29-8880-d7dd82e52a39.jpg?v=1727361799)
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Air enters the system through an oversized oval AEM Dryflow synthetic washable air filter for outstanding air flow
4lb OEM pulley
Analog systems feature dial gauges with manual pushbutton adjustment
and Nissan Titan 5
ECO Mode: 7 levels
Apexi N1-X Evolution Extreme Catback Exhaust 2017-2021 Honda Civic Si [FC1/FC3] (164KH002) 1641 Air enters the system throughThe N1 Evolution Extreme is based on the proven performance basics of the N1 muffler which emphasizes optimum, exhaust efficiency utilizing a straight thru layout design. Equipped with an internal hybrid silencer uniting power and free flowing characteristics with effective functional sound resonance. A newly adopted muffler tip completes the tail end of the exhaust that serves both purposes of function and form. Constructed with a light weight