Kooks Headers OEM Style 3" Cat-Back Exhaust System

2015–2023 Dodge Challenger SRT Hellcat 6.2L HEMI

Part #: 31634220

Overview

The Kooks Headers OEM Style 3-inch Cat-Back Exhaust System is expertly designed for Dodge Challenger enthusiasts who demand a perfect blend of enhanced performance, aggressive sound, and factory-correct aesthetics. Compatible with 2015 through 2023 Dodge Challenger models including the SRT Hellcat, Demon, Jailbreak, Redeye, Widebody, and Super Stock variants, this system upgrades your exhaust flow while maintaining the use of your original equipment manufacturer (OEM) exhaust tips for a seamless, stock appearance.

Handcrafted in the USA by Kooks Headers, a trusted leader in high-performance exhaust technology for over five decades, this cat-back system delivers noticeable horsepower and torque improvements alongside a refined, aggressive exhaust note. It is engineered for street driving, racing, and off-road use where durability, fitment, and quality craftsmanship are essential.

Key Features

Built to maximize power and reliability, the Kooks OEM Style Cat-Back Exhaust System offers:

• Premium 304 stainless steel construction for exceptional corrosion resistance and long-lasting durability
• 16-gauge mandrel-bent tubing that ensures smooth exhaust flow and optimal engine performance
• 3-inch diameter cat-back piping with a 2-3/4 inch inlet designed to perfectly match OEM headers and connection pipes
• Incorporation of a 3-inch X-pipe to balance exhaust pulses and improve scavenging efficiency
• Kooks 10-inch and 14-inch round race mufflers tuned for a deep, aggressive tone while minimizing drone
• Reuse of OEM exhaust tips and clamps to maintain a clean, factory-correct look
• Complete hardware and clamps included for straightforward, bolt-on installation
• Dyno and race tested to ensure maximum power gains and durability under demanding conditions
• Limited lifetime warranty to the original purchaser
• Manufactured entirely in the USA by a family-owned company with three generations of expertise

Construction & Design

This cat-back exhaust system is meticulously crafted from premium T304 aircraft-quality stainless steel, renowned for its outstanding strength and resistance to rust and corrosion. The 16-gauge mandrel-bent tubing preserves smooth exhaust flow by eliminating restrictions and sharp bends, optimizing horsepower and torque output.

The design features a 3-inch X-pipe that enhances exhaust scavenging and balances cylinder pulses, resulting in improved engine efficiency and a more refined exhaust note. The system’s mufflers are race-style units specifically tuned to provide a deep, aggressive sound while minimizing unwanted drone during cruising, ensuring a comfortable driving experience.

Performance & Sound

The Kooks OEM Style Cat-Back Exhaust System is engineered to unlock the full potential of your Dodge Challenger’s powertrain. By reducing backpressure and improving exhaust flow, this system helps increase horsepower and torque across the RPM range. The inclusion of the X-pipe and race mufflers delivers a rich, throaty exhaust tone that enhances the driving experience without overwhelming cabin comfort.

Installation & Fitment

Designed as a direct bolt-on replacement for the factory cat-back system, this Kooks exhaust fits 2015–2023 Dodge Challenger models equipped with OEM or Kooks headers and OEM connection pipes. It reuses the factory exhaust tips and clamps, ensuring seamless integration with your vehicle’s existing components. Installation requires no cutting or welding, making it accessible for professional installers and experienced enthusiasts alike.

What's Included

• 3-inch diameter cat-back exhaust piping
• 3-inch X-pipe
• Kooks 10-inch and 14-inch round race mufflers
• Clamps and hardware necessary for installation
• Installation instructions

Ideal For

This exhaust system is perfect for Dodge Challenger owners who want to enhance performance and sound while maintaining a factory-correct appearance. It suits street drivers, weekend racers, and enthusiasts who demand quality craftsmanship and proven race-tested technology. Whether you drive a Hellcat, Demon, Redeye, Jailbreak, Widebody, or Super Stock, this Kooks cat-back system delivers reliable power gains and an aggressive exhaust note without compromising daily drivability.