Essential Killer B Motorsport 4-1 Holy Header W/egt Bung 2-bolt Coated - Subaru Ej Models (inc. 2002-2014 Wrx / 2004-2021 Sti) Set [0VMAB5rL]

Superior Performance Header for Subaru EJ Models

At Killer B Motorsport, we are dedicated to providing top-tier performance upgrades for your Subaru EJ model. Our 4-1 Holy Header is a prime example of our commitment to excellence. Crafted with precision and designed to maximize power, this header is the perfect choice for enhancing the performance of your vehicle.

Engineered for Optimal Performance

This 4-1 Holy Header is engineered to deliver superior performance with its 2.5" large secondary and cast collector, which ensures a high-velocity merge design for increased flow rates. The header features short equal-length primaries and a symmetrical primary design, both of which contribute to a reduction in header volume and an improvement in transient response. Our headers are constructed with thick-walled 321 stainless steel, alloyed with titanium, to provide enhanced strength and toughness at elevated temperatures. This ensures longevity and reliability for your vehicle.

Perfect for Daily Drives and Track Days

The Killer B Motorsport 4-1 Holy Header is not just for track days; it's designed to enhance your daily driving experience as well. The symmetrical 4-1 design maintains high and consistent exhaust velocity as RPMs rise, reducing turbo lag and improving throttle response. This header is compatible with any 2-bolt up-pipe design, including some rotated setups, making it versatile for various applications. With the EGT bung located on cylinder #4, you can easily monitor engine temperatures for optimal performance. However, please note that this header may not fit some Forester, Outback, and Legacy models with the factory oil pan and oil cooler.