{"product_id":"crankshaft-911-1972-1977-copy","title":"Crankshaft - 911 | 1965-1971","description":"\u003cp\u003eCrankshaft For Porsche 911\u003cspan\u003e \u003c\/span\u003e(1965-1971) Models.\u003c\/p\u003e\n\u003cp\u003eUpgrade your early Porsche 911 engine with this high-performance, mass-balanced crankshaft—a direct replacement and significant upgrade for any 1965–1971 standard 911 (2.0L and 2.2L).\u003c\/p\u003e\n\u003cp\u003eWhile the original 911T engines featured lower-speed crankshafts without mass balancing, this counterweighted design is essential for the higher-revving E and S engines, and a necessary upgrade for any performance application.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Performance Benefits:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eReduced Friction \u0026amp; Increased Performance:\u003c\/b\u003e The precision-designed counterweights eliminate vibrations caused by bending loads, significantly reducing bearing friction and improving overall power output.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eExtreme Speed Stability:\u003c\/b\u003e Tested and proven in motorsport for continuous operation up to \u003cb\u003e10,000 rpm\u003c\/b\u003e, with stability up to \u003cb\u003e11,000 rpm\u003c\/b\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDurability:\u003c\/b\u003e Reduced stress on the crankcase and lower wear on all components, resulting in a longer engine lifespan.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eTechnical \u0026amp; Compliance Details:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eEngineering:\u003c\/b\u003e Designed using the latest CAD and Finite Element (FE) calculation methods for perfect connecting rod weight balance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMotorsport Legal:\u003c\/b\u003e \u003cb\u003eFIA legal\u003c\/b\u003e for historic motorsport and \u003cb\u003eAppendix K compliant\u003c\/b\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDirect Replacement:\u003c\/b\u003e Easily replaces any factory standard 911 crankshaft from \u003cb\u003e1965 to 1971\u003c\/b\u003e (2.0L and 2.2L), including the un-counterweighted 911T units.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"chat-history-scroll-container\" id=\"chat-history\"\u003e\n\u003cdiv id=\"05cab063b1157ef0\" class=\"conversation-container message-actions-hover-boundary ng-star-inserted\"\u003e\n\u003cdiv\u003e\n\u003cdiv data-hveid=\"1\" class=\"response-container ng-tns-c3997076371-23 response-container-with-gpi ng-star-inserted response-container-has-multiple-responses\"\u003e\n\u003cdiv class=\"presented-response-container ng-tns-c3997076371-23\"\u003e\n\u003cdiv class=\"response-container-content ng-tns-c3997076371-23\"\u003e\n\u003cdiv class=\"response-content ng-tns-c3997076371-23\"\u003e\n\u003cdiv dir=\"ltr\" id=\"model-response-message-contentr_05cab063b1157ef0\" class=\"markdown markdown-main-panel stronger enable-updated-hr-color\"\u003e\n\u003cp\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003cdiv class=\"response-footer gap complete\"\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e","brand":"Mittelmotor","offers":[{"title":"Default Title","offer_id":41031762214970,"sku":"1,1201B neu","price":7499.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/4846\/2650\/files\/Crankshaft-911-1965-1971-1.jpg?v=1759260253","url":"https:\/\/sierramadrecollection.com\/products\/crankshaft-911-1972-1977-copy","provider":"Sierra Madre Collection","version":"1.0","type":"link"}