{"product_id":"borgwarner-super-core-efr-b1-6259","title":"BorgWarner Super Core EFR B1 6258","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e179140\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 840232700411\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eBorgWarner Super Core EFR B1 6258 Turbo Assembly\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe BorgWarner Super Core EFR B1 6258 is the core assembly for the EFR 6258 turbocharger featuring dual ball bearings compressor and turbine wheels without housings. Build your turbo for vehicles like Subaru WRX STI Mitsubishi Lancer Evolution and other 4-cylinder performance cars targeting 225 to 600 horsepower. Pair with EFR housings for quick spool broad powerband and track-ready response.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Ball Bearings:\u003c\/strong\u003e Ceramic hybrid bearings cut friction for spool up to 15000 RPM faster and last longer under 2+ bar boost\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGamma-Ti Compressor Wheel:\u003c\/strong\u003e 62mm inducer 84mm exducer forged milled titanium flows 70+ lbs\/min with 76% peak efficiency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInconel Turbine Wheel:\u003c\/strong\u003e 68mm inducer 58mm exducer withstands 1050C exhaust gas temps for reliable high horsepower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Range:\u003c\/strong\u003e Handles 225-600 HP ideal for street track or drag setups with compressor map covering low to high boost\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Super Core Design:\u003c\/strong\u003e Bolts into EFR 6258 housings with A\/R options like 0.85 comp 0.64 or 0.85 T4 turbine\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSuper core requires separate compressor and turbine housings for complete turbo\u003c\/li\u003e\n\u003cli\u003eOil feed M12x1.25 coolant M14x1.5 ports match EFR standards\u003c\/li\u003e\n\u003cli\u003eSecure storage in dry environment to prevent corrosion on bearing surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003ePrime oil system and cycle bearings dry before full assembly\u003c\/li\u003e\n\u003cli\u003eCompatible with T4 open V-band turbine housings and 4\" or 5\" compressor inlets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza WRX STI\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2016\u003c\/td\u003e\n\u003ctd\u003eMitsubishi\u003c\/td\u003e\n\u003ctd\u003eLancer\u003c\/td\u003e\n\u003ctd\u003eEvolution X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1993-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e3 Series\u003c\/td\u003e\n\u003ctd\u003eM3 E36 E46 E90 Turbo Builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016-2021\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCivic\u003c\/td\u003e\n\u003ctd\u003eType R FK8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Cyl Turbo\u003c\/td\u003e\n\u003ctd\u003eCustom Builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose BorgWarner?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSupplies turbos to Formula Drift NHRA champions\u003c\/li\u003e\n\u003cli\u003eInvestment cast housings machined to micron tolerances\u003c\/li\u003e\n\u003cli\u003eOver 100 years engineering forced induction systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this super core fit my Subaru STI or Evo?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes with matching EFR 6258 housings it bolts into STI TD05 or Evo 4G63\/4B11 flange conversions for direct or adapter fit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What materials are used in construction?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Gamma-Ti compressor Inconel turbine 718 aluminum CHRA housing high-temp NiCrFe alloys throughout\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty coverage applies?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e 12-month unlimited mileage warranty from purchase date covers defects in materials workmanship with registration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Standard ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Foam protected in double-wall box 13 x 13 x 13 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 11.8 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BorgWarner","offers":[{"title":"Default Title","offer_id":39743385043023,"sku":"BWA179140","price":1811.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/borgwarner-super-core-efr-b1-6258-borgwarner.png?v=1770255057","url":"https:\/\/www.blackopsautoworks.com\/products\/borgwarner-super-core-efr-b1-6259","provider":"Black Ops Auto Works","version":"1.0","type":"link"}