{"product_id":"mcs902534","title":"Dynatek Twin Fire Ii Coil. Single Fire, 2 Plug – 1965–1999 Big Twin; 1965–2003 XL…","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eSingle fire coil. For single plugged head (2 spark plugs total) in single fire applications. 3 ohm primary resistance. Compatible with Dyna 2000i and most other lectronic ignition systems. Note: Not compatible with Dyna-S ignition modules; which require 5 ohm primary resistance. Note: It is recommended to use ignition modules \u0026amp; coils of the same manufacturer. Intermixing different brands may cause premature failure. Note: Difference between Single \u0026amp; Dual Fire: - Dual Fire - This is the way the earlier; pre-Twin Cam; engines work. A single coil is used and both spark plugs fire simultaneously. This is the simplest system. The ''wasted'' spark is sometimes said to be horsepower robbing. - Single Fire - This is the way the stock 00-up Twin Cam engines work. Two separate coils will fire the spark plugs independently and only the spark plug of the cylinder that is on compression stroke will be fired. It is said that these engines vibrate less and can improve power. The effects will become more pronounced with hotter cams and higher RPM.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e65-99 Big Twin\u003c\/li\u003e\n\u003cli\u003e65-03 XL Sportster. For carbureted models with custom single fire electronic ignition (Excl. Twin Cam \u0026amp; other single fire applications) (NU)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Dynatek\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e ELECTRICAL \u0026gt; COILS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit:\u003c\/strong\u003e EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct code:\u003c\/strong\u003e 902534\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Numbers\u003c\/h2\u003e\n\u003cp\u003eMCS Part Number: 902534\u003cbr\u003eManufacturer Part Number: DC6-5\u003c\/p\u003e","brand":"Dyna","offers":[{"title":"Default Title","offer_id":57377984283011,"sku":"MCS902534","price":205.11,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1329\/4265\/files\/902534k_e9b5fe5f-dd53-41bc-84b0-66ba36944ce0.jpg?v=1775577670","url":"https:\/\/hogparts.co.uk\/products\/mcs902534","provider":"Hogparts UK Ltd","version":"1.0","type":"link"}