Invidia [15-21 WRX/STI] Q300 Single Cat-Back Exhaust | HS15SW4G3S

Invidia [15-21 WRX/STI] Q300 Single Cat-Back Exhaust | HS15SW4G3S

The Invidia Q300 features a flat-bottom muffler design for improved high-speed aerodynamic performance. Inside, a continuous piping design with Advantex material delivers excellent free-flow exhaust with optimized back pressure – translating to real horsepower and torque gains with a rich, deep, sporty exhaust note.

Features

• Flat-bottom muffler design for aerodynamic performance
• Continuous piping with Advantex material for optimized back pressure
• SUS304 polished stainless steel piping, mandrel bent
• CNC-machined flanges and robot TIG welding
• Pipe ID: 76mm
• Tip: 101mm round stainless steel, single outlet
• No silencer included
• Part Number: HS15SW4G3S

Fitment

• 2015–2021 Subaru WRX
• 2015–2021 Subaru WRX STI

Important Note

Using a stock J-pipe or downpipe? The GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter (p/n 077046) is required.

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.