The Invidia Q300 Exhaust features a flat bottom-shaped muffler design, resulting in improved high-speed aerodynamic performance. The muffler inside contains a continuous piping design and use of Advantex material that results in an excellent free-flow exhaust with optimized back pressure, giving greater horsepower, torque gains, and a rich, deep, sporty sound. 

The use of SUS304 polished stainless steel piping, Mandrel bent to shape, state-of-the-art CNC machine-made flange, Robot TIG welding, and double-wall polished stainless steel or Titanium tips provides the Invidia Q300 Exhaust with outstanding durability and appearance. The Invidia 12+ Honda Civic Si Sedan Q300 Stainless Catback Exhaust features 70mm piping and 110mm exhaust tip diameters. 

70mm Piping Diameter
110mm Tip Diameter
SUS304 Stainless

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