{"product_id":"n1-cat-back-exhaust-system-1","title":"N1 Cat-Back Exhaust System","description":"The APEXi N1 Exhaust System is a high-performance cat-back exhaust specifically engineered for the 2002-2007 Subaru WRX and STI models (chassis codes GDA\/GDB). Drawing from APEXi's extensive experience in demanding racing environments, including the N1 endurance series, this exhaust system is designed to optimize exhaust flow and deliver a more aggressive auditory experience.\n\nConstructed with performance in mind, the N1 exhaust features a pipe diameter ranging from 70-80mm, culminating in a substantial 115mm tip diameter. This configuration is intended to reduce back pressure and improve exhaust scavenging, potentially leading to enhanced engine response and power output. The straight-through muffler design minimizes restrictions for maximum flow efficiency.\n\nWhile the direct benefits of exhaust upgrades can vary, cat-back systems like the APEXi N1 are generally associated with improved exhaust tone and a noticeable increase in horsepower and torque when paired with other performance modifications. For optimal performance and reliability, it is always recommended to consult with a professional installer or refer to specific tuning guides for your vehicle.\n\nThis APEXi N1 Exhaust System is designed for the 2002-2007 Subaru WRX and STI.","brand":"Apex’i","offers":[{"title":"Default Title","offer_id":52686938079544,"sku":"161AKF01","price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687887039.jpg?v=1784878678","url":"https:\/\/store.motormia.co\/products\/n1-cat-back-exhaust-system-1","provider":"MOTORMIA","version":"1.0","type":"link"}