Alpha Series 76mm Downpipe

The Skunk2 Racing 76mm Alpha Series Downpipe is engineered to improve exhaust flow for the 2016-2021 Honda Civic Si and Sport models equipped with the 1.5T engine (L15B7). This downpipe offers a true 3-inch (76mm) diameter from the turbo outlet to the mating flange, eliminating a significant restriction in the factory exhaust system. Constructed from premium 304 stainless steel tubing and flanges, it includes a durable stainless steel flex section to absorb engine movement and prevent leaks. The design prioritizes ease of installation by retaining the factory O2 sensor locations and ensuring compatibility with OEM heat shields. All necessary hardware is included for a straightforward fitment. Skunk2 offers two options: a Straight (catless) version for maximum flow, and a Catted version featuring a Max Flow 100-cell platinum palladium catalyst for those seeking a balance between performance and emissions control. It is crucial to note that the Straight version is intended for race use only and is not street legal in emission-controlled areas. The Catted version, while including a catalyst, may also not comply with all local emissions regulations. Buyers are advised to check their local laws before purchasing. A tune is recommended to maximize the benefits of this downpipe and ensure the vehicle's systems remain stable.