{"product_id":"s-s®-super-stock®-cylinder-head-kit-for-3-1-2-and-3-5-8-bore-hd®-1984-99-big-twins-natural-aluminum-finish","title":"S\u0026S® Super Stock® Cylinder Head Kit For 3-1\/2\" and 3-5\/8\" Bore HD® 1984-'99 Big Twins - Natural Aluminum Finish","description":"\u003cdiv id=\"product-accordion\" class=\"accordionModule panel-group\" data-mce-fragment=\"1\"\u003e\n\u003cdiv id=\"product-tab-Description\" class=\"tab-content collapse  active in\" role=\"tabpanel\" aria-labelledby=\"product-tab-heading-Description\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"tab-pane active\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThese S\u0026amp;S\u003csup data-mce-fragment=\"1\"\u003e®\u003c\/sup\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eSuper Stock\u003csup data-mce-fragment=\"1\"\u003e®\u003c\/sup\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003ecylinder heads for 1984-'99 HD\u003csup data-mce-fragment=\"1\"\u003e®\u003c\/sup\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eEvolution\u003csup data-mce-fragment=\"1\"\u003e®\u003c\/sup\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eBig Twin engines feature a specially shaped combustion chamber and require special pistons that must be purchased separately. (Not compatible with stock style flat topped pistons) Large 2.000\" intake and 1.605\" exhaust valves and high flowing ports supply plenty of air for big inch engines. Compatible with cams with lifts up to .650\". Compatible with stock 3-1\/2\" or 3-5\/8\" bore engines. Order appropriate gasket kits separately for your specific bore size. Natural aluminum finish.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget-id=\"a7416184-46a9-4cac-8f78-3248ffdfc40c\" class=\"productSpecifications\" data-mce-fragment=\"1\"\u003e\u003c\/div\u003e","brand":"Havoc Parts","offers":[{"title":"Default Title","offer_id":42120187478181,"sku":"","price":2135.13,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0349\/1361\/6008\/products\/24_6f317136-0790-450e-b34e-ae7356cb0eef.png?v=1670010131","url":"https:\/\/shop.havoc-motorcycles.com\/products\/s-s%c2%ae-super-stock%c2%ae-cylinder-head-kit-for-3-1-2-and-3-5-8-bore-hd%c2%ae-1984-99-big-twins-natural-aluminum-finish","provider":"Havoc Motorcycles","version":"1.0","type":"link"}