{"product_id":"grimmspeed-bb450-turbocharger-subaru-sti-2004-2021-wrx-2002-2007","title":"GrimmSpeed BB450+ Turbocharger - Subaru STI (2004-2021) \/ WRX (2002-2007)","description":"\u003cp\u003e\u003cstrong\u003eGRM.1204.1.0 - GrimmSpeed BB450+ Turbocharger - Subaru STI (2004-2021) \/ Subaru WRX (2002-2007)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe GrimmSpeed BB450+ is a factory-location, bolt-on turbocharger with ceramic ball bearings, a billet 2618 aluminum compressor wheel, and an Inconel 713C turbine wheel. Its 8cm turbine housing balances responsive midrange torque with sustained top-end performance. It retains stock-style connections without cutting or custom fabrication.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCeramic ball bearing system\u003c\/li\u003e\n\u003cli\u003eCompressor wheel inducer\/exducer: 53.4mm \/ 67.4mm\u003c\/li\u003e\n\u003cli\u003eTurbine wheel inducer\/exducer: 49.1mm \/ 56mm\u003c\/li\u003e\n\u003cli\u003eCompressor flow: 61 lbs\/min\u003c\/li\u003e\n\u003cli\u003eA356 aluminum compressor housing; 0.77 A\/R\u003c\/li\u003e\n\u003cli\u003eHiSiMo turbine housing: 8cm\u003c\/li\u003e\n\u003cli\u003e6061 billet aluminum dual-port wastegate actuator\u003c\/li\u003e\n\u003cli\u003eStraight, 6-gauge zinc-plated steel wastegate bracket\u003c\/li\u003e\n\u003cli\u003e15 PSI default base pressure; 3–26 PSI adjustment with included spring combinations\u003c\/li\u003e\n\u003cli\u003eSupports compatible 3-port and 4-port boost control configurations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSubaru STI (2004-2021)\u003c\/li\u003e\n\u003cli\u003eSubaru WRX (2002-2007)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e Proper ECU tuning is required. Additional supporting modifications may be necessary for your setup and performance goals.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0743\/3165\/2402\/files\/BB450_and_BB550_Plus_Wastegate_Spring_Chart_1.pdf?v=1793653725\"\u003eManufacturer wastegate spring chart\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eCircuit Spec R is an authorized GrimmSpeed dealer. Free shipping within the contiguous US.\u003c\/p\u003e","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":67934901076275,"sku":"GRM.1204.1.0","price":1899.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0256\/5855\/6497\/files\/GRM.12041.0-BB450_Turbo-1.jpg?v=1793906683","url":"https:\/\/www.circuitspecr.com\/products\/grimmspeed-bb450-turbocharger-subaru-sti-2004-2021-wrx-2002-2007","provider":"Circuit Spec R","version":"1.0","type":"link"}