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GReddy

GReddy 2017+ Honda Civic SI Coupe DD-R Resonated Exhaust

$1013.76

On Backorder — Expected to ship by Aug 9, 2026

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GReddy 2017+ Honda Civic SI Coupe DD-R Resonated Exhaust

Key Features

  • Fits 2017+ Honda Civic SI Coupe.
  • 3-inch diameter, mandrel-bent stainless steel tubing for smooth exhaust flow.
  • DD-R resonated muffler design aims to reduce drone while enhancing exhaust tone.
  • Straight-through muffler internals minimize backpressure for improved engine breathing.
  • Dual-tip exit provides a sportier rear aesthetic.
  • Includes all necessary hardware for installation.
This cat-back exhaust system is designed specifically for the 2017 and later Honda Civic SI Coupe model. Please verify fitment for your specific vehicle.
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About this part

Product Details

Constructed from 3-inch diameter, mandrel-bent stainless steel tubing, this GReddy DD-R resonated cat-back exhaust system is built for the 2017 and later Honda Civic SI Coupe. It's designed to replace the factory exhaust from the catalytic converter back, offering a more aggressive sound and improved exhaust flow compared to the stock setup. The resonated design helps to manage drone and unwanted frequencies, aiming for a sportier tone without being overly intrusive during daily driving.

The DD-R (Dual Drive-R) muffler features a straight-through internal design, which minimizes backpressure and allows the engine to breathe more freely. This can lead to a noticeable improvement in throttle response and a more engaging exhaust note, especially when the engine is under load. The system includes a dual-tip exit, giving the rear of your Civic SI Coupe a more performance-oriented look. All the necessary hardware for installation is included, making it a straightforward bolt-on upgrade for those looking to enhance both the sound and performance of their vehicle.

When installing this system, you'll want to ensure all connections are properly sealed to prevent leaks. The stainless steel construction means it's well-built to resist corrosion over time, even in varied weather conditions. This cat-back exhaust is a popular choice for Civic SI owners looking for a balance between a sportier sound and a refined driving experience.

Specifications

Brand
GReddy
Manufacturer Part #
10158600

Frequently Asked Questions

GReddy 2017+ Honda Civic SI Coupe DD-R Resonated Exhaust

$1013.76