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Killer B Equal Length 4-1 Performance Holy Header W-Uppipe - Fits Subaru WRX 2002-2014 - STI 2004-2019 - More

Killer B Equal Length 4-1 Performance Holy Header W-Uppipe - Fits Subaru WRX 2002-2014 - STI 2004-2019 - More

SKU: KLRB-HH4-1
Regular price $1,669.00 USD
Regular price Sale price $1,669.00 USD
Sale Sold out

The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine the optimal design to increase power as much as possible throughout the rev range. Primaries were made as short as possible along with a single secondary which significantly decrease header volume allowing exhaust gas pressure to build quickly.

Not CARB Legal

The symmetrical 4-1 design maintains high and consistent exhaust velocity as RPMs rise. You can expect significantly faster spool up time compared to long primary/double secondary designs. You will immediately notice an improvement in throttle/boost response and the ability to hold more power higher into the revs.

Cast Collector

  • The collector is thick-walled cast 321 stainless steel. The casting removes several welds, each weld removed is one less flow disruption (reduced turbulence). The casting has features milled into it that assure the primary tubes fit VERY concentric every time. Using a casting allows the collector to be designed as a true high velocity merge rather than tubing that can only be formed a little bit, and not ideally. The casting is thicker/stronger than formed tube and also holds heat better.

Short Equal Length Primaries

  • The Holy Header includes the shortest possible primaries you can have on an equal length header. Short means less header volume and quicker spool up.
Symmetrical Primary Design
  • All Holy Header primaries have a similar tube length AND bend geometry. This keeps the pulse velocities high and consistent compared to equal length headers with non-symmetrical primary tubing geometry.
Smooth Mandrel Bends
  • All of the bends utilize a mandrel for smooth non-restrictive flow. Not only that, we use the largest bends possible at every location. It would be cheaper to use 2” bends everywhere, like others do, but that’s not going to give the best performance.

Thick Walled 321 Stainless Steel Construction for Long Life

321 is alloyed with titanium and costs more, but it’s the ideal material for high temperature turbocharged applications. The temperatures on turbocharged cars can easily exceed the limits of 304 stainless steel enough to make them brittle and crack. 321 stainless steel has higher strength and toughness at high temperatures. It was developed by the aircraft industry specifically to address cracking issues in 304 stainless manifolds. Killer B Motorsport is the only company that manufactures full 321 headers.

High Heat Retention

  • 321 stainless steel conducts far less heat than 304 stainless steel. The short primaries and properly sized secondaries also pull less heat from the exhaust gases, increasing turbine efficiency. Large tubing headers expose the exhaust gases to more surface area, transmitting more heat and reducing exhaust energy. You can also ceramic coat or wrap our headers (and keep the warranty) without exceeding the temperature range.

V-Band Up-Pipe Connection

  • Why V-Band? Fast, easy, no gasket, no leaks, and perfect concentric alignment of tubes for no disruption of flow, what’s not to like!

Up-Pipe included

  • Of course it comes with an up-pipe! This header was designed as a complete system. Using other up-pipes would only compromise performance, and nobody wants that.

Works with OEM EJ25 Oil Pans, and Killer B Motorsport Performance Aluminum Oil Pan!

Fits All WRX & STi EJ Series Engines. Designed to work with OEM location turbo.

Made in the USA!

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Warranty Information

RalliTEK BRANDED PRODUCTS LIFETIME WARRANTY

RalliTEK branded products are warranted to the original owner against manufacturing defects in materials and workmanship for the lifetime of the product.

If a RalliTEK branded product covered by this warranty fails due to a manufacturing defect we will repair the product, without charge, or replace it at our discretion. This policy covers only original, unaltered, and unmodified materials and workmanship. This warranty does not cover damage caused by incorrect installation, accident, improper care, negligence, normal wear and tear, or the natural breakdown of colors and materials over extended time and use. Damage not covered under warranty may be repaired for a reasonable rate and a fee will be charged for return shipping.

For warranty evaluation, please contact RalliTEK Customer Service at (503) 619.0055 or info@rallitek.com to obtain a return authorization. Once this step has been completed, your product must be returned directly to the RalliTEK Warranty Department, 13339 NE Airport Way, Suite 500, Portland, OR 97230. All shipping to the Warranty Department must be pre-paid and insured. RalliTEK will not be liable for damaged or lost inbound packages.

      NOTThis warranty is only available within the United States or Canada

  • This warranty gives you specific legal rights; you may have other rights, which vary from state to state.
  • This warranty does not cover products sold by RalliTEK that are not RalliTEK branded products.

The RalliTEK website sells discontinued, special markup, and slightly blemished products at significant discounts as 'factory seconds' products. This warranty does not automatically cover products purchased as factory seconds. RalliTEK reserves the right to determine if any warranty applies on a case-by-case basis for factory second parts. If approved, the RalliTEK Warranty Department may repair factory second products for a reasonable charge and applicable shipping charges.

MANUFACTURER WARRANTIES (FOR NON-RALLITEK BRANDED PRODUCTS)

Non-RalliTEK branded products do not have any written or implied warranties. Products on RalliTEK.com are sold with the warranty applied directly from the manufacturer. The customer must contact the product brand manufacturer for any warranty details. All products sold by RalliTEK are intended for off-road and/or race use only, as suggested by the manufacturer, and should be installed and set up by professional service centers only. RalliTEK is not responsible for any product failure or failure due to installation. Should a warranty claim arise, the customer and the manufacturer will handle all warranty issues directly.

There is no warranty on high-performance or race-related parts due to the nature of usage.

No payment or reimbursement shall be made for installation, removal, transportation, or other charges. The remedies outlined in this instrument are exclusive and the liability of RalliTEK with respect to any sale shall not exceed the price of the product on which the liability is based.

EXCEPT AS STATED OTHERWISE IN THIS WARRANTY, RalliTEK MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. RalliTEK shall not, in any case, be liable for special, incidental, consequential, indirect, or other similar damages arising from any breach of these warranties even if RalliTEK or its agent has been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you. This warranty is governed by the laws of the State of Oregon.

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