A'PEXi - N1 Evolution R (Catback) - Subaru Impreza WRX 11-14 / STI Hatchback 08-14 Product Type_Air Ducts If you are unsure whether

If you are unsure whether or not this location has changed

Bolt Thread: UNF 3/14-16

2in) Rear: -25mm to -30mm (-1

1 Carbon fiber rear diffuser

but will require ECU re-tune

A'PEXi - N1 Evolution R (Catback) - Subaru Impreza WRX 11-14 / STI Hatchback 08-14 Product Type_Air Ducts If you are unsure whetherThe 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 today's 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