Cat-Back Milltek Subaru WRX STI 2.5T 300hp 2014-2021 - With Primary Muffler - Quad GT100 Titanium Outlets

Milltek Sport Exhaust System for Subaru WRX STI

Is the factory sound of your Subaru WRX STI leaving you wanting more? This Milltek Sport stainless steel exhaust system is the most requested upgrade among owners: more presence, a true sound signature, and build quality that lasts.

Technical specifications

• Milltek part number: SSXSB045
• Part type: Exhaust system
• Details: With primary muffler, quad GT100 titanium outlets
• Tube diameter: 76.2 mm (3 inch)
• Outlets: 4 Titanium GT100 outlets
• Tip finish: titanium finish
• Installation information: Louder version
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Subaru WRX STI 2.5T 300 hp (2014-2021)

Not sure about compatibility with your vehicle? Contact us with your chassis number (VIN) before ordering.

Most frequently asked questions

• Fitment: the system uses the original mounting points. A repair shop typically fits it in one to two hours.

Why choose Milltek Sport?

Owner feedback most often highlights the fit quality and a deep sound that is present but never harsh. This is the Milltek Sport signature, from the British manufacturer specializing in stainless steel exhausts.