{"product_id":"s-s-cycle-84-99-bt-640-camshaft","title":"S\u0026S Cycle 84-99 BT 640 Camshaft","description":"This 640 is for 1984-1999 Harley-Davidson® big twin models with large displacement motors with compression ratios of 10.5 - 11.5:1 or smaller motors with 11:1 - 12:1 compression ratio, does not require as much compression as the 631. For hydraulic tappet, spring spacing is required.\n\u003cul\u003e\n  \u003cli\u003eThis camshaft IS also for 1954-1984 big twins with either the Hydraulic Conversion kit or the Cylinder Head Replacement kit for panhead engines\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":49173367652604,"sku":"ssc33-5108","price":255.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/8305\/0549\/files\/9e76e071ed1c4580655faaa6ba50e19a.png?v=1780943451","url":"https:\/\/www.bullfrogmotosport.com\/products\/s-s-cycle-84-99-bt-640-camshaft","provider":"Bullfrog Motosport","version":"1.0","type":"link"}