Vibrant Performance StreetPower Muffler 1139, 4-Inch Center Inlet and Outlet, 18-Inch Round Body

The Vibrant Performance StreetPower Muffler Part Number 1139 is a universal exhaust muffler designed for custom automotive applications requiring efficient exhaust flow and a polished stainless steel finish. It features a 4-inch center inlet and 4-inch center outlet for straightforward installation in compatible exhaust systems, while the reversible design provides added flexibility when positioning the muffler under the vehicle.
The round muffler body measures 18 inches in length and uses a compact 7-inch body diameter for a balanced combination of performance and fitment versatility. Its 22-inch overall length accommodates a range of custom exhaust layouts without requiring a vehicle-specific configuration. The polished stainless steel construction offers corrosion resistance and a clean appearance suited to both street-driven and performance-oriented builds.
Designed for universal use, the Vibrant Performance StreetPower Muffler 1139 can be incorporated into custom exhaust systems, replacement projects, and fabrication work where a 4-inch inlet and outlet are required. Confirm exhaust routing, inlet and outlet alignment, available clearance, and mounting requirements before installation. Professional installation is recommended for systems requiring cutting, welding, or other exhaust modifications.

Features:

• Brand: Vibrant Performance

• Part Number: 1139

• Series: StreetPower

• Inlet Size: 4-inch center inlet

• Outlet Size: 4-inch center outlet

• Body Shape: Round

• Body Length: 18 inches

• Body Diameter: 7 inches

• Overall Length: 22 inches

• Construction: Stainless steel

• Finish: Polished

• Design: Reversible

• Fitment: Universal

• Quantity: Sold individually