Vibrant Performance 1146 StreetPower 3" x 7" Oval Muffler

Vehicle Fitment

• Universal - Fits custom exhaust systems with 3.00" inlet/outlet; requires fabrication or welding (no specific vehicle fitment).

Features

• True straight-through internal design for improved exhaust flow
• 3.00" inlet and outlet for compatibility with common performance exhaust piping
• 7" oval body shape for efficient sound absorption
• Dense packing material for rich, performance-oriented exhaust tone
• StreetPower series tuning for balanced sound and flow
• 304 stainless steel construction for corrosion resistance
• Polished finish for clean visual appeal
• TIG-welded inlet and outlet tubes for strength

Specifications

• Part Number: 1146
• Brand: Vibrant Performance
• Muffler Type: StreetPower straight-through oval muffler
• Material: 304 stainless steel
• Inlet Diameter: 3.00" (76.2 mm)
• Outlet Diameter: 3.00" (76.2 mm)
• Body Dimensions: 3" H x 7" W
• Orientation: Straight-through

Included Components

• 1x Vibrant Performance 1146 StreetPower 3" x 7" muffler

Product Description

The Vibrant Performance 1146 StreetPower 3" x 7" Oval Muffler is a universal exhaust component designed for custom automotive exhaust systems that use 3" piping. Featuring a true straight-through internal design and densely packed sound-absorbing materials, this muffler promotes efficient exhaust flow while providing a rich, deep exhaust tone that enhances both sound and performance. Its oval body shape helps maximize internal packing area, optimizing tone control and airflow on performance builds.

Constructed from durable 304 stainless steel with TIG-welded inlet and outlet tubes, the 1146 muffler offers excellent resistance to corrosion and long-lasting durability in high-temperature exhaust environments. The StreetPower series tuning provides a balanced sound profile that works well in custom cat-back, turbo-back, or free-flow exhaust designs. Ideal for fabricators and enthusiasts building custom exhaust systems on cars, trucks, and performance vehicles.