Killer B Motorsport SWAIN Coated Twin Scroll Equal Length Header 2015-2021 WRX

This is the turbo header specially designed to work with the FA20 platform, and it features durable stainless steel construction to provide you with long-lasting performance. This manifold has been designed with smooth bends to optimize the exhaust flow which will maximize the performance from both a factory or aftermarket turbocharger standpoint. The factory manifold is heavy by design, and although it is durable and works well, there is a lot on the table for improvement. Killer B's example will reduce the turbo lag while increasing both horsepower and torque throughout the entire RPM range, and will be required especially for those of you looking to make big horsepower numbers that would otherwise be limited by the factory design. 

DETAILS:

• Strong 321 stainless steel construction 
• SWAIN-Coated for extra protection against heat
• Equal length layout
• 1/2" thick billet precision CNC machined flange that is ground flat to provide a leak-free seal
• Designed to optimize the exhaust flow
• Produces an aggressive exhaust note
• Saves weight when compared to the OEM design
• Improves both horsepower and torque
• Ideal for those of you with an upgraded turbocharger looking to make big boost and big numbers
• Also maximizes the performance out of the factory turbocharger
• Reduces turbo lag
• Will include new hardware