Decades of race engineering are incorporated into every part Skunk2 develops. Our MegaPower Double Barrel (DB) Exhaust system for the '17 - '20 Honda Civic Si is no exception. All MegaPower exhaust systems are finely tuned using CNC Mandrel bends, precision robotic TIG - welds and unrestrictive resonators to maximize exhaust velocity and eliminate restriction. Featuring parallel, dual race mufflers mounted center beneath the bumper, this system emits that iconic, vicious Skunk2 exhaust note. New bolt - on exhaust hanger hardware is included for use with the OEM hangers to allow adjustment for exact positioning of the exhaust. Additionally, new exhaust flange gaskets, bolts, and nuts are also included to ensure the system is free of leaks.