[{"id":410714734834,"handle":"all","title":"All","updated_at":"2024-11-22T07:45:09-08:00","body_html":"","published_at":"2022-07-26T15:47:40-07:00","sort_order":"price-asc","template_suffix":"","disjunctive":false,"rules":[{"column":"vendor","relation":"not_equals","condition":"re:do"},{"column":"type","relation":"not_equals","condition":"Exchange and Return Credit"}],"published_scope":"global","image":{"created_at":"2024-08-07T15:06:09-07:00","alt":null,"width":2048,"height":1536,"src":"\/\/rallitek.com\/cdn\/shop\/collections\/IMG_7964.jpg?v=1723068369"}},{"id":409616711922,"handle":"old","title":"All(old)","updated_at":"2024-11-22T07:45:08-08:00","body_html":"","published_at":"2022-12-12T13:01:33-08:00","sort_order":"manual","template_suffix":"","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"all"}],"published_scope":"global"},{"id":443875786994,"handle":"black-november-sale-2024","title":"Black November Sale 2024","updated_at":"2024-11-22T07:45:09-08:00","body_html":"\u003cp\u003eSave now! Save Big!\u003c\/p\u003e","published_at":"2024-10-25T11:55:01-07:00","sort_order":"alpha-asc","template_suffix":"","disjunctive":true,"rules":[{"column":"vendor","relation":"equals","condition":"RalliTEK"},{"column":"vendor","relation":"equals","condition":"NashFab"},{"column":"type","relation":"not_equals","condition":"return,package_protection"}],"published_scope":"global","image":{"created_at":"2024-10-25T11:53:14-07:00","alt":null,"width":1440,"height":560,"src":"\/\/rallitek.com\/cdn\/shop\/collections\/bf-24-banner-3.png?v=1729882395"}},{"id":438522970354,"handle":"killer-b-motorsports","title":"Killer B Motorsports","updated_at":"2024-11-06T08:08:14-08:00","body_html":null,"published_at":"2024-07-23T13:22:31-07:00","sort_order":"best-selling","template_suffix":null,"disjunctive":false,"rules":[{"column":"vendor","relation":"equals","condition":"Killer B Motorsports"}],"published_scope":"web"},{"id":413528981746,"handle":"non-rallitek-products","title":"NON-RALLITEK PRODUCTS","updated_at":"2024-11-22T07:05:11-08:00","body_html":"","published_at":"2022-10-11T13:18:52-07:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"vendor","relation":"not_equals","condition":"RalliTEK"},{"column":"vendor","relation":"not_equals","condition":"re:do"}],"published_scope":"global"},{"id":407594729714,"handle":"rallitek-products-all","title":"RalliTEK Products All","updated_at":"2024-11-22T07:45:09-08:00","body_html":"","published_at":"2022-05-19T12:12:15-07:00","sort_order":"best-selling","template_suffix":"","disjunctive":true,"rules":[{"column":"vendor","relation":"equals","condition":"RalliTEK"},{"column":"vendor","relation":"not_equals","condition":"re:do"},{"column":"type","relation":"not_equals","condition":"return,package_protection"}],"published_scope":"global"},{"id":409449791730,"handle":"exhaust","title":"Subaru Exhausts","updated_at":"2024-11-06T08:07:53-08:00","body_html":"","published_at":"2022-06-20T15:08:39-07:00","sort_order":"manual","template_suffix":"","disjunctive":true,"rules":[{"column":"type","relation":"equals","condition":"Exhaust"}],"published_scope":"global","image":{"created_at":"2022-12-19T09:02:24-08:00","alt":null,"width":1080,"height":1080,"src":"\/\/rallitek.com\/cdn\/shop\/collections\/backup-collection-409449791730.png?v=1671469345"}},{"id":425266774258,"handle":"subaru-wrx","title":"Subaru WRX","updated_at":"2024-11-21T21:05:02-08:00","body_html":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eExplore the great outdoors with enhanced offroad performance using our premium collection of offroad parts for the WRX. Engineered for durability and optimized for rugged terrains, these parts are crafted to elevate your offroad experience. From robust suspension systems and durable skid plates to high-performance tires, our collection ensures that your STI is equipped to handle challenging trails with confidence. Upgrade your vehicle's capabilities and conquer the wilderness with our top-quality offroad parts.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","published_at":"2024-01-26T08:15:57-08:00","sort_order":"alpha-asc","template_suffix":"models-landing-page","disjunctive":true,"rules":[{"column":"tag","relation":"equals","condition":"wrx 2002"},{"column":"tag","relation":"equals","condition":"wrx 2003"},{"column":"tag","relation":"equals","condition":"wrx 2004"},{"column":"tag","relation":"equals","condition":"wrx 2005"},{"column":"tag","relation":"equals","condition":"wrx 2006"},{"column":"tag","relation":"equals","condition":"wrx 2007"},{"column":"tag","relation":"equals","condition":"wrx 2008"},{"column":"tag","relation":"equals","condition":"wrx 2009"},{"column":"tag","relation":"equals","condition":"wrx 2010"},{"column":"tag","relation":"equals","condition":"wrx 2011"},{"column":"tag","relation":"equals","condition":"wrx 2012"},{"column":"tag","relation":"equals","condition":"wrx 2013"},{"column":"tag","relation":"equals","condition":"wrx 2014"},{"column":"tag","relation":"equals","condition":"wrx 2015"},{"column":"tag","relation":"equals","condition":"wrx 2016"},{"column":"tag","relation":"equals","condition":"wrx 2017"},{"column":"tag","relation":"equals","condition":"wrx 2018"},{"column":"tag","relation":"equals","condition":"wrx 2019"},{"column":"tag","relation":"equals","condition":"wrx 2020"},{"column":"tag","relation":"equals","condition":"wrx 2021"},{"column":"tag","relation":"equals","condition":"wrx 2023"},{"column":"tag","relation":"equals","condition":"wrx 2022"},{"column":"tag","relation":"equals","condition":"wrx 2024"}],"published_scope":"global","image":{"created_at":"2024-01-26T08:20:44-08:00","alt":null,"width":1620,"height":1080,"src":"\/\/rallitek.com\/cdn\/shop\/collections\/0Y3A6443_Large_60205ff4-68e4-407c-9636-b107791cba1e.jpg?v=1706286045"}},{"id":417869857010,"handle":"subaru-wrx-02-08","title":"Subaru WRX 02-07","updated_at":"2024-11-21T21:05:02-08:00","body_html":"","published_at":"2023-06-06T10:23:28-07:00","sort_order":"manual","template_suffix":"models-landing-page","disjunctive":true,"rules":[{"column":"tag","relation":"equals","condition":"wrx 2002"},{"column":"tag","relation":"equals","condition":"wrx 2003"},{"column":"tag","relation":"equals","condition":"wrx 2005"},{"column":"tag","relation":"equals","condition":"wrx 2004"},{"column":"tag","relation":"equals","condition":"wrx 2006"},{"column":"tag","relation":"equals","condition":"wrx 2007"}],"published_scope":"global","image":{"created_at":"2024-08-09T14:36:37-07:00","alt":null,"width":2048,"height":1536,"src":"\/\/rallitek.com\/cdn\/shop\/collections\/IMG_7964_ddb05517-4249-409b-960f-adc6d9d6e2d1.jpg?v=1723239398"}},{"id":417869922546,"handle":"subaru-wrx-08-14","title":"Subaru WRX 08-14","updated_at":"2024-11-21T21:05:02-08:00","body_html":"","published_at":"2023-06-06T10:28:05-07:00","sort_order":"manual","template_suffix":"models-landing-page","disjunctive":true,"rules":[{"column":"tag","relation":"equals","condition":"wrx 2008"},{"column":"tag","relation":"equals","condition":"wrx 2009"},{"column":"tag","relation":"equals","condition":"wrx 2010"},{"column":"tag","relation":"equals","condition":"wrx 2011"},{"column":"tag","relation":"equals","condition":"wrx 2012"},{"column":"tag","relation":"equals","condition":"wrx 2013"},{"column":"tag","relation":"equals","condition":"wrx 2014"}],"published_scope":"global","image":{"created_at":"2024-08-09T14:24:17-07:00","alt":null,"width":2048,"height":1536,"src":"\/\/rallitek.com\/cdn\/shop\/collections\/IMG_7964_d50fb20e-bfca-452f-b994-31108b162c2d.jpg?v=1723238658"}}]
Killer B Equal Length 4-1 Performance Holy Header W-Uppipe - Fits Subaru WRX 2002-2014 - STI 2004-2019 - More
SKU: KLRB-HH4-1
No reviews
$1,669.00
Title
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.
