{"product_id":"harddrive-hd-performance-coils-hp-coil-single-fire-m8-softail-2018-2022-820-60417","title":"Harddrive HD Performance Coils - HP Coil Single Fire M8 Softail 2018-2022 — Harley-Davidson (2018-2024)","description":"\u003cp\u003eHarddrive HD Performance single-fire coil for 2018-2022 Harley-Davidson M8 Softail models. Delivers up to 30,000 volts with 20% higher peak spark voltage than stock, improving cold starting, eliminating high-speed misfire, and boosting fuel economy. ION Sense feedback maintains full compatibility with the stock Harley EFI ECU.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e30,000 volt high-power output\u003c\/li\u003e\n  \u003cli\u003e20% higher peak spark voltage vs. stock\u003c\/li\u003e\n  \u003cli\u003eSingle-fire configuration for M8 Softail\u003c\/li\u003e\n  \u003cli\u003eION Sense feedback for OEM ECU compatibility\u003c\/li\u003e\n  \u003cli\u003eImproves starting and eliminates high-speed misfire\u003c\/li\u003e\n  \u003cli\u003eIncreases fuel mileage and overall performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Harddrive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 10-2017\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 191361439537\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoil Type:\u003c\/strong\u003e Single Fire\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Output:\u003c\/strong\u003e 30,000 volts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 5 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 3 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China (Mainland)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson M8 Softail models 2018 through 2022.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWill this coil work with my stock Harley ECU?\u003c\/h3\u003e\n\u003cp\u003eYes. ION Sense feedback keeps it fully compatible with the factory EFI system — no tuner required.\u003c\/p\u003e\n\u003ch3\u003eWhat's the voltage output compared to stock?\u003c\/h3\u003e\n\u003cp\u003eThis coil produces 30,000 volts with peak spark voltage roughly 20% higher than OEM, improving ignition under load and at high RPM.\u003c\/p\u003e\n\u003ch3\u003eDoes this fix misfire issues?\u003c\/h3\u003e\n\u003cp\u003eYes. The increased spark energy typically eliminates high-speed misfire and improves cold-start reliability.\u003c\/p\u003e\n\u003ch3\u003eIs this single-fire or dual-fire?\u003c\/h3\u003e\n\u003cp\u003eThis is a single-fire coil designed specifically for 2018-2022 M8 Softail. Dual-fire applications require a different part number.\u003c\/p\u003e\n\u003ch3\u003eDo I need to rejet or tune my carb?\u003c\/h3\u003e\n\u003cp\u003eNot necessary. Spark coils alone do not require carburetor changes. Stock jetting remains appropriate.\u003c\/p\u003e","brand":"Harddrive","offers":[{"title":"Default Title","offer_id":53036026691695,"sku":"820-60417","price":103.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_ba495891-2cf4-46d5-aae8-d65e521bd73e.png?v=1779566130","url":"https:\/\/vtwinbikers.com\/products\/harddrive-hd-performance-coils-hp-coil-single-fire-m8-softail-2018-2022-820-60417","provider":"Vtwinbikers","version":"1.0","type":"link"}