2015-2021 Subaru WRX STi Stainless Steel Polished Silver Muffler Axle Back 4 Inches Double Wall Quad Burnt Tips Cat-Back Exhaust

2015-2021 Subaru WRX STi Stainless Steel Polished Silver Muffler Axle Back 4 Inches Double Wall Quad Burnt Tips Cat-Back Exhaust

Fitment:

• 2015-2021 Subaru WRX
• 2015-2022 Subaru WRX STI

Package Includes:

1 X Subaru WRX STi 3" Mid-Pipe Tube ( 3 Pieces Kit ),
5 X Gasket 
2 X Bag of Hardware 

Details:

Exhaust Tip Diameter: 4 Inches
Exhaust Pipe Diameter: 2.5 Inches
Mid Pipe Diameter: 3 Inch Split to 2.5 Inch Piping Mandrel Bent Piping

A cat-back exhaust system is an aftermarket upgrade for a vehicle's exhaust system that replaces the exhaust components located after the catalytic converter. This typically includes the muffler, resonator, and piping. The purpose of a cat-back exhaust system is to improve exhaust flow and enhance the sound of the exhaust note. By reducing exhaust restrictions and back pressure, a cat-back exhaust can improve engine performance and increase horsepower and torque. The name "cat-back" refers to the fact that the catalytic converter, which is responsible for reducing harmful emissions, is not replaced or modified as part of this system.