Magnaflow Competition Series Catback

2017–2021 Honda Civic Si Coupe 2.0L Turbo

Part #: 19420

Overview

The Magnaflow Competition Series Catback Exhaust System is engineered for Honda Civic Si Coupe owners who demand maximum performance and an aggressive exhaust note. Designed to enhance your vehicle's power output and sound profile, this system is perfect for enthusiasts seeking a race-inspired upgrade that elevates both style and performance. Whether you're on the street or at the track, you'll get a noticeable boost in horsepower and torque, along with a commanding exhaust tone that turns heads.

Built with high-quality materials and precision craftsmanship, the Competition Series Catback is tailored to deliver optimal airflow and durability. Its aggressive sound signature makes it an ideal choice for drivers who want their Civic Si to stand out with a deep, resonant exhaust note while supporting increased engine performance. This system is designed for those who want to push their vehicle's capabilities and enjoy a more spirited driving experience.

Key Features

The Magnaflow Competition Series Catback Exhaust offers a combination of performance, durability, and style, making it a top choice for Honda enthusiasts. Key features include:

• All mandrel-bent tubing ensures smooth airflow and reduces turbulence, maximizing exhaust efficiency and power gains.
• Constructed from 409 stainless steel with a high-temp satin black coating, providing excellent corrosion resistance and a sleek, aggressive appearance.
• Designed specifically for the 2017-2021 Honda Civic Si Coupe with 2.0L turbocharged engine, ensuring a perfect fit and seamless installation.
• Increased horsepower and torque, supporting your vehicle’s performance upgrades and spirited driving.
• Lifetime construction warranty offers peace of mind and confidence in durability and quality.
• Made in the USA, reflecting high manufacturing standards and quality control.
• Features a bold, aggressive exhaust tone that demands attention and enhances your Civic Si’s sporty character.

Construction & Design

The Magnaflow Competition Series Catback is meticulously engineered with mandrel-bent tubing to ensure optimal exhaust flow and minimal restrictions. The use of 409 stainless steel provides excellent durability and resistance to corrosion, while the high-temp satin black coating adds a sleek, aggressive look that complements the sporty aesthetic of the Civic Si. The system’s one-piece construction and precise TIG welding techniques guarantee a robust, leak-free fit that withstands the rigors of spirited driving and harsh conditions.

The design emphasizes both performance and style, with a focus on reducing weight and increasing exhaust efficiency. The aggressive tone is achieved through carefully tuned piping and muffler design, delivering a deep, resonant sound that enhances the driving experience without excessive drone or noise pollution.

Installation & Fitment

The Magnaflow Competition Series Catback Exhaust is a bolt-on upgrade that requires no cutting or welding. It mounts directly to the factory exhaust system using OEM mounting points and hardware, making installation straightforward for experienced DIYers or professional installers. The system is designed for a seamless fit on the 2017-2021 Honda Civic Si Coupe with 2.0L turbocharged engine, ensuring a hassle-free upgrade that gets you back on the road quickly. No tuning or additional modifications are necessary to enjoy the full benefits of this performance exhaust.

What's Included

• Complete catback exhaust system with mandrel-bent tubing
• High-flow muffler with aggressive tone
• All necessary clamps, hardware, and mounting brackets
• Detailed installation instructions

Ideal For

• Honda Civic Si Coupe owners seeking maximum performance upgrades
• Enthusiasts wanting a more aggressive exhaust sound
• Drivers looking to reduce weight and improve exhaust flow
• Performance-focused street and track enthusiasts