Street Flow 2-Chamber Performance Muffler | 2.5" Center In / 2.5" Center Out

Similar to the Flowmaster 40 series. 

Street Flow SF42540 2-Chamber Performance Muffler. Designed for enthusiasts who want a deep, aggressive muscle car tone without sacrificing drivability, the SF42540 delivers improved exhaust flow and a powerful exhaust note that's ideal for street performance applications.

Built from heavy-duty 16-gauge aluminized steel, this muffler features precision-crafted internal chambers that enhance exhaust scavenging while producing a moderate-to-aggressive sound. A premium high-heat powder coat finish helps protect against corrosion, while the installer-friendly design makes it an excellent choice for custom exhaust fabrication.

The 2.5" Center In / 2.5" Center Out configuration is perfect for many muscle cars, trucks, hot rods, Jeeps, and custom performance builds requiring a centered inlet and outlet. Whether you're replacing an old chambered muffler or building a completely new exhaust system, the SF42540 delivers the classic rumble performance enthusiasts love.

Features

✔ Classic 2-chamber performance design

✔ Deep, aggressive muscle car exhaust tone

✔ Heavy-duty 16-gauge aluminized steel construction

✔ Premium high-heat powder coat finish

✔ Precision handcrafted internal chambers

✔ Improved exhaust flow characteristics

✔ Installer-friendly design

✔ Made in North America

Specifications

• Part Number: SF42540
• Muffler Series: Street Flow
• Muffler Style: 2-Chamber
• Inlet: 2.5" Center
• Outlet: 2.5" Center
• Body Size: 4" x 9.5" Oval
• Body Length: 13"
• Overall Length: 19"
• Material: 16-Gauge Aluminized Steel
• Finish: High-Heat Silver Powder Coat
• Sound Level: Moderate to Aggressive
• Configuration: Non-Reversible
• Universal Fitment
• Warranty: 3-Year Limited Warranty

Ideal For

• Muscle cars
• Classic cars
• Performance trucks
• Street rods
• Jeep builds
• Custom exhaust systems
• V8 performance applications
• Restoration projects