MBRP S7221AL 2.5" Cat-Back Exhaust System 1999-2004 Ford Mustang GT/Mach 1 4.6L

Vehicle Fitment

• 1999-2004 Ford Mustang GT (All Trims, 4.6L V8, RWD)
• 2003-2004 Ford Mustang Mach 1 (All Trims, 4.6L V8, RWD)

Fitment Notes

• Compatible with RWD drivetrain only; fits coupe and convertible body styles.
• Does not fit V6 or non-4.6L V8 models, or 2005+ Mustang generations.

Features

• Mandrel-bent 2.5-inch tubing reduces backpressure for improved throttle response and efficiency.
• High-flow muffler tunes a deep, throaty street sound without excessive drone or rasp.
• 16-gauge aluminized steel resists corrosion and withstands road hazards.
• Dual rear exit with 3.5-inch polished stainless tips adds aggressive styling.
• Lowers exhaust temperatures by up to 200°F for better engine performance.
• Bolt-on design ensures easy integration with factory hangers and mounts.
• Enhances low-end torque and fuel economy in daily or spirited driving.
• Backed by 3-year warranty for materials and manufacturing defects.

Specifications

• Position: Rear (Cat-Back)
• Pipe Diameter: 2.5 inches
• Material: 16-gauge heavy-duty aluminized steel
• Exit Style: Dual rear
• Tip: 3.5 inches OD, T304 stainless steel, polished
• Muffler: Flow-through, street profile
• Weight: 45 lbs (complete kit)
• Drivetrain: RWD

Included Components

• 1x Muffler
• 1x Front Pipe
• 1x Over-Axle Pipe
• 2x Tailpipes
• 2x 3.5-inch Stainless Steel Tips
• 1x Hardware Kit (clamps, hangers, bolts)

Product Description

The MBRP S7221AL Installer Series Cat-Back Exhaust System is precision-engineered for 1999-2004 Ford Mustang GT and 2003-2004 Mach 1 models with the 4.6L V8, delivering a balanced upgrade that enhances sound and flow without sacrificing drivability. Mandrel-bent 2.5-inch aluminized steel tubing minimizes restrictions to boost torque and responsiveness, while the flow-through muffler crafts a deep, throaty street-friendly tone that's assertive under acceleration yet subdued on highways. Perfect for enthusiasts in RWD coupes or convertibles seeking a subtle performance edge, it fits seamlessly with OEM components, improving efficiency and adding a polished dual rear exit with 3.5-inch stainless tips for a factory-plus look.

Installation is a true bolt-on affair, completed in 1-2 hours with basic tools and no fabrication, reusing stock catalytic converters for emissions compliance and ensuring vibration-free operation through reinforced seams. The durable 16-gauge construction combats rust and fatigue in everyday conditions, backed by a 3-year warranty for reliability. This system excludes V6 or non-4.6L V8 variants and later Mustang generations due to exhaust routing differences. Whether for commuting or casual cruises, the S7221AL unlocks MBRP's value-driven engineering to make your New Edge Mustang sound and perform with refined authority.