The Skunk2 MegaPower Double Barrel (DB) Exhaust System for the 2017–2020 Honda Civic Si Coupe 1.5L delivers the aggressive sound, precision craftsmanship, and proven performance that Skunk2 is known for. Developed through decades of race engineering, the MegaPower DB system is designed to maximize exhaust velocity and eliminate restriction, improving horsepower, torque, and throttle response.

Constructed from 304 stainless steel, the exhaust features CNC mandrel-bent tubing, precision robotic TIG welds, and unrestrictive resonators for a smooth flow path from end to end. The system’s dual polished race mufflers with 100mm tips create the signature deep, sporty Skunk2 tone while maintaining daily drivability.

Each kit includes new adjustable exhaust hanger hardware, flange gaskets, bolts, and nuts for a precise, leak-free installation. The MegaPower DB is a bolt-on system that requires no cutting or welding and is compatible with the factory downpipe or Skunk2’s Alpha Downpipe upgrades.

Key Features:

• 304 Stainless Steel Construction for long-lasting durability

• Polished Dual 100mm Race Mufflers with an aggressive exhaust tone

• 76mm (3") CNC Mandrel-Bent Tubing for optimized exhaust flow

• High-Flow Resonator enhances tone and reduces drone

• Universal 76mm Flange fits stock downpipe and aftermarket options

• Precision Robotic TIG Welding ensures consistency and strength

• Includes All Hardware and Gaskets for easy installation

• No Cutting or Welding Required – true bolt-on fitment

• Compatible with Skunk2 MegaPower Exhaust Silencer

• Tested and Proven on Track and Street for reliable performance

Technical Specifications:

• Material: 304 Stainless Steel

• Tubing Diameter: 76mm (3")

• Tip Diameter: 100mm (4")

• Configuration: Dual center-mounted mufflers

• Finish: Polished stainless steel

• Installation: Direct bolt-on (no fabrication)

Vehicle Fitment:

Compatible with the following vehicle:

• 2017–2020 Honda Civic Si Coupe (1.5L Turbo)

Recommended Pairings (Sold Separately):

• Alpha Downpipe 76mm – P/N 412-05-6060

• Alpha Downpipe w/ Cat 76mm – P/N 412-05-6061

Included:

• (1) MegaPower Double Barrel Exhaust System

• (2) 100mm Polished Muffler Tips

• (1) High-Flow Resonator

• (1) Hardware Kit (Hangers, Gaskets, Bolts, Nuts)