MagnaFlow 16631 Street Series Stainless Steel Cat-Back Performance Exhaust System

The MagnaFlow 16631 Street Series Cat-Back Performance Exhaust System delivers the signature MagnaFlow combination of dyno-proven power gains and a resonant, deep exhaust tone. Engineered as a direct replacement for all stock exhaust components from the catalytic converter rearward, this system is built to outperform the factory setup right out of the box.

Featuring 2.5-inch mandrel-bent main piping and dual straight-through mufflers, this kit maximizes exhaust flow for improved horsepower and torque while maintaining a balanced, moderate exterior sound level and a comfortable mild interior cabin sound. The system exits via a single straight passenger-side rear outlet and is finished with a polished 4-inch double-wall, angle-cut rolled-edge welded tip for a clean, aggressive appearance.

Key Features:

• 409 Stainless Steel Construction — corrosion-resistant tubing built for long-term durability and vehicle lifetime performance
• Mandrel-Bent Piping — maintains consistent inner diameter throughout all bends for unrestricted exhaust flow
• Dual Straight-Through Mufflers — engineered for a smooth, deep MagnaFlow tone without excessive interior drone
• Single Passenger-Side Rear Exit with polished 4-inch double-wall tip
• 50-State Legal — designed to optimize power based on factory calibration without defeating emissions equipment
• Direct-Fit Design — developed using 3D scanning technology for OEM-like fitment and straightforward bolt-on installation
• CNC Precision Robotic Manufacturing — ensures consistent quality and reliable fitment
• All Hardware Included — complete kit with everything needed for DIY installation
• SAE J1169 Tested — validated against industry noise and performance standards
• Made in the USA

The MagnaFlow 16631 is backed by a limited lifetime construction warranty and a 1-year limited finish warranty, giving you long-term confidence in your investment. Whether you're looking to add performance, improve exhaust sound, or simply upgrade aging factory components, the Street Series delivers measurable results.