Skunk2 MegaPower RR Cat-Back Exhaust – 2017–2020 Honda Civic Si Sedan

Decades of race engineering are incorporated into every part Skunk2 develops — and the MegaPower RR (Double Barrel) Cat-Back Exhaust for the 2017–2020 Honda Civic Si Sedan is no exception. Finely tuned using CNC mandrel bends, precision robotic TIG welds, and unrestrictive resonators to maximize exhaust velocity and eliminate restriction, the MegaPower RR features parallel dual race mufflers mounted center beneath the bumper — delivering that iconic, vicious Skunk2 exhaust note that the K20C2-powered Si deserves.

Key Features

• MegaPower RR (Double Barrel) Design: Parallel dual race mufflers mounted center beneath the bumper for a distinctive, aggressive exhaust note and a clean, symmetrical rear appearance
• CNC Mandrel Bends: Precision CNC mandrel-bent tubing maintains consistent inner diameter throughout every bend — maximizing exhaust velocity and eliminating flow restriction
• Robotic TIG Welds: Precision robotic TIG welding for consistent, high-quality welds throughout the entire system
• Unrestrictive Resonators: Tuned resonators eliminate drone and harshness without restricting exhaust flow
• Bolt-On Exhaust Hanger Hardware: New bolt-on hanger hardware included for use with OEM hangers — allows precise positioning adjustment of the exhaust system
• Complete Hardware Kit: Includes exhaust flange gaskets, bolts, and nuts for a leak-free installation
• Skunk2 Race Engineering: Engineered by Skunk2 Racing — decades of Honda performance and motorsport development

Specifications

• Type: Cat-Back Exhaust (MegaPower RR / Double Barrel)
• Muffler Configuration: Parallel Dual Center-Exit
• Construction: CNC Mandrel Bent / Robotic TIG Welded
• Includes: Exhaust hanger hardware, flange gaskets, bolts, nuts
• Part Number: 413-05-6060

Fitment

• 2017–2020 Honda Civic Si — Sedan (FC1 / K20C2)

Note: Designed for the Civic Si Sedan only — not compatible with the Civic Si Coupe or standard Civic. Professional installation recommended. Verify fitment for your specific Civic Si variant before ordering. Exhaust sound levels may vary — confirm local noise regulations before installation.