APEXi N1 Exhaust System 06-11 Civic Si *Discontinued Powersports Injectors This is an equal length

This is an equal length manifold for the WRX and STI which includes gaskets

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or SPDZ1 engine harness to use this relay adapter

Designed to be part of a custom

Aluminum Material - Reduces unsprung weight compared to steel alternatives

APEXi N1 Exhaust System 06-11 Civic Si *Discontinued Powersports Injectors This is an equal lengthThe N1 series muffler has become a staple of the import tuning industry. The N1 was the first of its kind to incorporate the classic angled muffler design that has became so familiar with todays street cars. Born from our involvement in the grueling N1 endurance series, the N1 exhaust system pairs a straight through design racing muffler with free flowing, mandrel bent piping (60. 5mm N A, 80mm for turbo applications). The combination has resulted in