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

Similar to the Flowmaster 40 series

Street Flow SF42543 2-Chamber Performance Muffler. Engineered for enthusiasts who want a deep, aggressive muscle car rumble while improving exhaust flow, the SF42543 is an excellent choice for street performance, trucks, hot rods, Jeeps, and custom exhaust systems.

Constructed from heavy-duty 16-gauge aluminized steel, the SF42543 features precision-crafted internal chambers that enhance exhaust scavenging while delivering a bold, aggressive exhaust note. A premium high-heat silver powder coat finish provides excellent durability and corrosion resistance, while the installer-friendly design makes fabrication and installation simple. The non-reversible chambered design is tuned to provide a moderate-to-aggressive sound without excessive interior drone.

The 2.5" Offset In / 2.5" Offset Out configuration is one of the most popular layouts for muscle cars, classic restorations, performance trucks, and custom V8 exhaust systems requiring both the inlet and outlet to be offset.

Features

✔ Classic 2-chamber performance design

✔ Deep, aggressive muscle car exhaust tone

✔ Heavy-duty 16-gauge aluminized steel construction

✔ Premium high-heat silver powder coat finish

✔ Precision handcrafted internal chambers

✔ Improved exhaust flow characteristics

✔ Installer-friendly design

✔ North American made

Specifications

• Part Number: SF42543
• Series: Street Flow
• Muffler Style: 2-Chamber
• Inlet: 2.5" Offset
• Outlet: 2.5" Offset
• Body Size: 4" × 9.5" Oval
• Body Length: 13"
• Overall Length: 19"
• Material: 16-Gauge Aluminized Steel
• Finish: High-Heat Premium Silver Powder Coat
• Sound Level: Moderate to Aggressive
• Configuration: Non-Reversible
• Universal Fitment
• Warranty: 3-Year Limited Warranty

Ideal For

• Muscle cars
• Classic restorations
• Performance trucks
• Street rods
• Jeep builds
• Custom exhaust systems
• V8 performance applications
• Off-road vehicles