Performance Downpipe

The 27WON Performance Downpipe is engineered to provide a no-compromise solution for power, style, and fitment in performance turbocharged engines. Its market-leading 3.125” downpipe inlet is CAD-designed to create a large volume for hot exhaust gases, thereby increasing turbocharger efficiency and response. Construction features investment cast T304 stainless steel for the inlet and outlet flanges, combined with stainless steel piping and brackets that are precision TIG welded for long-lasting durability. The heat shield brackets are laser cut and formed for a superior connection. This downpipe is designed to work with all OEM heat shields and is recommended to be paired with 27WON's larger, free-flowing front pipe for maximum benefits. This downpipe is designed for the 2016+ Honda Civic SI, Sedan, Coupe, and Hatchback models with the 1.5T engine, as well as 2017+ Honda CRV 1.5T models. It is compatible with the optional factory engine block heater. Note that for applications outside of North America, modifications to the lower heat shield may be required for proper fitment. The product includes a Limited Lifetime Warranty and is designed in Vancouver, Washington. For optimal performance gains, a custom tune is recommended. Without a tune, the downpipe provides an estimated 7 wHP gain from 3200rpm to 5400rpm. A Street-Catted option is available, featuring a high-flow 200-cell density metallic foil catalytic converter for street and race applications. However, this version is for off-road use only and may illuminate the Check Engine Light (CEL). Professional installation is suggested, with an estimated install time of 2 hours and a difficulty rating of 4/5.