Street Max Performance Muffler | 3" Offset / 3" Offset

Retail Price: 146.00

Allied Price: 103.00

Similar to Magnaflow 11239

Street Max SM11239 Performance Muffler, engineered to maximize exhaust flow while delivering a deep, aggressive exhaust tone without excessive interior drone. Its straight-through perforated core design promotes improved horsepower, torque, and throttle response, making it an excellent choice for performance vehicles and custom exhaust fabrication.

Manufactured from heavy-duty 16-gauge 409 stainless steel, the SM11239 is built for long-lasting durability and corrosion resistance. The high-heat thermal mesh and premium acoustic packing help control unwanted rasp while producing a smooth, refined performance sound.

The 3" Offset In / 3" Offset Out configuration is ideal for muscle cars, trucks, hot rods, LS engine swaps, turbocharged applications, and custom-built exhaust systems. Its fully reversible design offers added flexibility during installation.

Features

✔ Straight-through high-flow perforated core

✔ Deep, aggressive performance exhaust tone

✔ Heavy-duty 16-gauge 409 stainless steel construction

✔ High-heat thermal mesh for superior sound control

✔ Helps reduce interior drone and exhaust rasp

✔ Improved horsepower and torque

✔ Fully welded construction

✔ Reversible universal installation

Specifications

• Part Number: SM11239
• Inlet: 3" Offset
• Outlet: 3" Offset
• Body Size: 4" x 9" Oval
• Body Length: 14"
• Overall Length: 20"
• Material: 16-Gauge 409 Stainless Steel
• Core Design: Straight Through
• Sound Level: Moderate to Aggressive
• Universal Fitment
• Warranty: 3-Year Limited Warranty

Ideal For

• Custom exhaust systems
• Muscle cars
• Street performance vehicles
• Trucks
• LS engine swaps
• Turbocharged applications
• Hot rods
• Off-road vehicles
• Restoration projects