Cat-Back Exhaust System

The 27WON FE1-6-101-10 represents a premium front-pipe back exhaust system meticulously engineered for the 11th generation Honda Civic Si and 5th generation Acura Integra (FE1/DE4 chassis). Constructed from 100% T304 stainless steel and precision TIG welded throughout, this exhaust system is built for durability and a refined appearance with its brushed finish. It features a dual-tip setup that respects the OEM aesthetic or a single-exit option with a larger tip for a more aggressive tuner look. The system utilizes a two-phase resonator design on the dual-exit version, employing both an expansion chamber and an absorption resonator to manage sound frequencies and reduce back-pressure, thereby increasing performance potential. The single-exit version incorporates a single resonator for a slightly louder tone. Performance gains are achieved by increasing the exhaust piping diameter from 50mm to 63.5mm, resulting in a 58% increase in cross-sectional area. This modification reduces back-pressure, making it easier for exhaust gases to exit the turbocharger, and contributes to a deeper exhaust tone. The system is available as a front-pipe back configuration or as a complete turbo-back system that includes a high-flow catted downpipe. Installation is designed to be straightforward, with estimated install times of 2 hours for both dual and single exit versions, rated at a 3/5 difficulty. It utilizes 3-bolt flanges for optimal sealing and alignment, eschewing less reliable slip joints and 2-bolt flanges. Custom gaskets are included to ensure a leak-free installation. This exhaust system comes with a Limited Lifetime Warranty and personalized customer support.