{"product_id":"the-killer-b-motorsport-321-stainless-holy-header-up-pipe-copy","title":"The Killer B Motorsport 321 Stainless Holy Header\/Up-Pipe (Copy)","description":"\u003cp\u003e2004-2021 STi, 2002-2014 WRX, 2004-2013 Forester XT, 2004-2009 Outback XT, 2004-2009 Legacy GT\u003c\/p\u003e\n\u003cp\u003eKiller B Motorsport 321 Stainless Steel Holy Header With 2-Bolt Flange\u003cbr\u003eThe Killer B Motorsport Holy Header was developed using state of the art CAD software \u0026amp; simulations to determine optimal design to increase power as much as possible throughout the rev range. Short as possible primaries with a single secondary significantly decrease header volume allowing exhaust gas pressure to build quickly. Symmetrical 4-1 design maintains high and consistent exhaust velocity as RPMs rise. You can expect faster spool up time compared to long primary\/double secondary designs. A difference you will immediately notice in throttle\/boost response and the ability to hold more power higher into the revs.\u003c\/p\u003e","brand":"Killer B","offers":[{"title":"Default Title","offer_id":68088319017282,"sku":"HH-2BOLT-EGT","price":1689.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9294\/3170\/files\/HH-2BOLT_KillerBMotorsport321StainlessSteelHolyHeaderWith2-BoltFlange_None_None.jpg?v=1794234242","url":"https:\/\/autospecdesign.com\/products\/the-killer-b-motorsport-321-stainless-holy-header-up-pipe-copy","provider":"AutoSpec Design","version":"1.0","type":"link"}