{"product_id":"brian-crower-b58-beehive-spring-titanium-retainer-kit","title":"Brian Crower BC0326 Beehive Spring Ti Retainer Kit for BMW\/Toyota B58 Engine","description":"\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\u003cul\u003e \u003cli\u003e2020+ Toyota GR Supra, B58 3.0L Turbo I6\u003c\/li\u003e \u003cli\u003eBMW B58-equipped models (e.g., 340i, 440i, M240i, X3 M40i, Z4 M40i) - confirm exact model\/year with Brian Crower\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment Notes\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eEngine-specific kit (B58 3.0L turbo inline-6) - spans multiple BMW chassis and the Toyota GR Supra that share this engine\u003c\/li\u003e \u003cli\u003eConfirm your exact vehicle application with Brian Crower before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eBeehive spring design reduces reciprocating mass for high-RPM stability\u003c\/li\u003e \u003cli\u003eWound from high-grade, super clean chrome silicone alloy\u003c\/li\u003e \u003cli\u003eProprietary processing procedures ensure consistent spring pressure\u003c\/li\u003e \u003cli\u003eTitanium retainers CNC machined from 6AL4V round bar to exacting tolerances\u003c\/li\u003e \u003cli\u003eDesigned to handle increased lift from aftermarket camshafts\u003c\/li\u003e \u003cli\u003eReduces valvetrain weight versus factory steel retainers\u003c\/li\u003e \u003cli\u003eSupports sustained high-RPM operation without spring surge\u003c\/li\u003e \u003cli\u003eManufactured to Brian Crower's precision quality standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eSpring type: Beehive (progressive rate)\u003c\/li\u003e \u003cli\u003eRetainer material: 6AL4V titanium, CNC machined\u003c\/li\u003e \u003cli\u003eSeat pressure: 80 lbs @ 1.450\"\u003c\/li\u003e \u003cli\u003eOpen pressure: 180 lbs @ 0.950\"\u003c\/li\u003e \u003cli\u003eCoil bind: 0.910\"\u003c\/li\u003e \u003cli\u003eMaximum lift: 0.480\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eIncluded Components\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eBeehive valve springs and titanium retainers (full engine set)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003cp\u003eThe Brian Crower BC0326 is a beehive valve spring and titanium retainer kit built for the B58 3.0L turbocharged inline-6, shared across the Toyota GR Supra and multiple BMW models. Wound from high-grade chrome silicone alloy by PAC Racing Springs, the beehive design reduces reciprocating mass for stable high-RPM performance, while CNC-machined 6AL4V titanium retainers shave further weight from the valvetrain.\u003c\/p\u003e\u003cp\u003eTogether, they're built to support increased lift from aftermarket camshafts and sustained high-RPM operation without spring surge or valve float. Since the B58 engine spans many BMW chassis codes, confirm your exact vehicle application with Brian Crower before ordering.\u003c\/p\u003e\u003cmeta name=\"description\" content=\"Upgrade your BMW or Toyota GR Supra with the Brian Crower BC0326 beehive spring and titanium retainer kit for high-RPM stability.\"\u003e\u003cmeta name=\"keywords\" content=\"BMW B58 valve spring kit, Toyota GR Supra performance parts, titanium retainer set, beehive valve springs, aftermarket camshafts accessories, high-RPM engine components, CNC machined retainers, Brian Crower engine parts, automotive valve train upgrades, precision spring manufacturing\"\u003e","brand":"Brian Crower","offers":[{"title":"Default Title","offer_id":53200075850047,"sku":"BRCBC0326","price":334.95,"currency_code":"USD","in_stock":false}],"url":"https:\/\/wcaperformance.com\/products\/brian-crower-b58-beehive-spring-titanium-retainer-kit","provider":"WCA Performance","version":"1.0","type":"link"}