MagnaFlow Street Series Performance Exhaust System

1970–1972 Dodge Challenger

15851

Overview:

The MagnaFlow Street Series Crossmember-Back Performance Exhaust System 15851 is engineered specifically for the classic 1970 to 1972 Dodge Challenger, delivering a perfect blend of enhanced engine sound and proven performance gains. Designed for muscle car enthusiasts who want to improve both the auditory presence and efficiency of their exhaust system, this kit offers a deep, resonant MagnaFlow signature tone that balances moderate exterior volume with mild interior sound levels. Whether you're cruising the streets or showing off at car meets, this exhaust system elevates your Challenger’s character without overwhelming cabin comfort.

Built to replace the exhaust from the crossmember back, this system is ideal for owners seeking a direct-fit upgrade that enhances both style and function. Its durable stainless steel construction ensures long-lasting corrosion resistance, making it a reliable choice for daily drivers and weekend warriors alike.

Key Features:

Designed with precision and performance in mind, the MagnaFlow Street Series Performance Exhaust System offers the following key features:

• Crossmember-back layout for direct replacement from the crossmember rearward
• Mandrel bent 2.5-inch main piping for optimal exhaust flow and reduced restrictions
• Dual Straight-Through mufflers delivering a deep, smooth exhaust note
• Dual split rear exit with 2.75-inch polished welded-on single wall turndown cut edge tips for a classic muscle car appearance
• Extensive 3D scanning ensures a precise direct-fit design for easy installation
• Manufactured using CNC precision robotic techniques for consistent quality and fitment
• Durable stainless steel construction provides excellent corrosion resistance and longevity
• Backed by MagnaFlow’s limited lifetime construction warranty for peace of mind

Construction & Design:

The MagnaFlow Street Series exhaust system is crafted from high-quality stainless steel, chosen for its superior resistance to rust and corrosion, ensuring your investment lasts through years of driving. The mandrel bent piping maintains consistent diameter throughout bends, minimizing flow restrictions and maximizing exhaust scavenging. The dual Straight-Through mufflers are engineered to reduce backpressure while producing MagnaFlow’s signature deep and resonant tone. Polished welded-on tips not only enhance the visual appeal but also provide a durable finish that resists discoloration and wear.

Every component is manufactured with CNC robotic precision, guaranteeing exact fitment and consistent build quality. The use of advanced 3D scanning technology during development ensures that the system fits perfectly to the 1970–1972 Dodge Challenger chassis, simplifying installation and eliminating the need for modifications.

Performance & Sound

This performance exhaust system is designed to improve exhaust flow, which can contribute to better throttle response and a slight increase in horsepower and torque. The dual Straight-Through mufflers produce a deep, throaty exhaust note that enhances the muscle car experience without excessive cabin drone. Exterior sound levels are moderate, making it suitable for street use while still delivering an aggressive presence that commands attention.

Installation & Fitment:

The MagnaFlow Street Series system is a direct-fit replacement for the exhaust components from the crossmember back on 1970 to 1972 Dodge Challengers. Thanks to precise 3D scanning and CNC manufacturing, installation is straightforward and can typically be completed with basic hand tools. No cutting, welding, or modifications are required, allowing for a hassle-free upgrade that maintains factory mounting points and clearances.

What's Included:

• Mandrel bent 2.5-inch stainless steel main piping
• Dual Straight-Through mufflers
• Dual split rear exit with 2.75-inch polished welded-on single wall turndown cut edge tips
• All necessary clamps and hardware for installation
• Detailed installation instructions

Ideal For:

This exhaust system is perfect for classic Dodge Challenger owners who want to enhance their vehicle’s performance and sound without sacrificing drivability or comfort. It suits muscle car enthusiasts looking for a durable, high-quality exhaust upgrade that delivers a signature MagnaFlow tone and reliable fitment. Whether restoring a classic or upgrading for spirited street driving, this system offers a balanced solution that complements the iconic styling and power of the early 1970s Challenger.

MagnaFlow is a performance exhaust manufacturer best known for cat‑back and axle‑back systems, mufflers, and catalytic converters engineered for quality sound and improved flow. Their vehicle-specific exhaust options span muscle, import, and truck applications—making MagnaFlow a staple upgrade when you want a deeper tone, cleaner fitment, and a proven performance-focused exhaust setup.