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Classic Style Killer B Motorsport 4-1 Holy Header W/egt Bung - Subaru Models (inc. 2002-2014 Wrx / 2004-2021 Sti) And More [UjLAoiIN]

$91.99 $294.99 -69%

Killer B Motorsport 4-1 Holy Header for Subaru Models At RallySport Direct, we are thrilled to offer the Killer B Motorsport 4-1 Holy Header, a top-tier exhaust upgrade designed specifically for Subaru models, including the 2002-2014 WRX and 2004-202

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Classic Style Killer B Motorsport 4-1 Holy Header W/egt Bung - Subaru Models (inc. 2002-2014 Wrx / 2004-2021 Sti) And More [UjLAoiIN]

Killer B Motorsport 4-1 Holy Header for Subaru Models

At RallySport Direct, we are thrilled to offer the Killer B Motorsport 4-1 Holy Header, a top-tier exhaust upgrade designed specifically for Subaru models, including the 2002-2014 WRX and 2004-2021 STI. This high-performance header is crafted with precision and quality, ensuring an optimal exhaust flow that enhances both sound and power throughout the RPM range.

Advanced Construction and Features

The Killer B Motorsport 4-1 Holy Header is constructed from thick-walled 321 stainless steel, an alloy that excels in withstanding the extreme heat generated by turbochargers. This robust material extends the lifespan of the header while maintaining a superior performance. Key features include a cast collector made of 347 stainless steel for reduced turbulence and a true high-velocity merge, short equal length primaries for quick spool up, and smooth mandrel bends to promote non-restrictive flow. Additionally, the header comes with a v-band up pipe option and an EGT sensor bung, making it a comprehensive and versatile upgrade.

Performance and Practical Benefits

The Killer B Motorsport 4-1 Holy Header delivers a significant boost in horsepower and torque, while reducing turbo lag and producing an aggressive exhaust note. This upgrade optimizes exhaust flow across the entire RPM range, resulting in a smoother, more powerful driving experience. Whether you're a daily driver or a performance enthusiast, this header is designed to enhance your Subaru's performance and sound. Note that compatibility may vary with certain Forester, Outback, and Legacy models equipped with OEM oil pans and coolers.

What Our Customers Say

January 25, 2026

Absolutely no complaints!

It's a very reliable piece of tech.

- Sawyer P..

January 25, 2026

Absolutely no complaints!

It’s a beautifully crafted device.

- Theodore D..

January 25, 2026

Absolutely no complaints!

A great item. I'm pleased.

- Bambi F..

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