{"product_id":"s-s-shovel-cylinder-head-kit-3-5-8-bore-natural","title":"S\u0026S, Shovel cylinder head kit. 3-5\/8\" bore. Natural","description":"Natural aluminum finish. O-ring style. Stock style; 3-5\/8 big bore cylinder heads from S\u0026amp;S for 66-84 Shovelhead models. S\u0026amp;S heads are designed as stock replacement. Still; where stock heads flow about 124 cfm @ 10\"; S\u0026amp;S heads do improve these figures somewhat and typically flow around 135 cfm @ 10\". Heads come assembled with valves; springs; collars; valve guide seals; rocker cover and exhaust mount hardware etc. (excl. rocker arms and covers) and complete with cylinder head; rocker cover and exhaust gaskets. These heads are ready to run and will accept camshafts with a lift of up to .590\".\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 66-78 Big Twin with o-ring style heads \u0026amp; big bore cylinders (NU)\u003c\/p\u003e","brand":"S\u0026S","offers":[{"title":"Default Title","offer_id":54307923591495,"sku":"512372","price":2317.02,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/7812\/0519\/files\/512371k_4591168d-b584-4638-8e11-83f7d156572a.jpg?v=1784486286","url":"https:\/\/www.chopperessentials.com\/products\/s-s-shovel-cylinder-head-kit-3-5-8-bore-natural","provider":"Chopper Essentials Co.","version":"1.0","type":"link"}