{"product_id":"us-53-660-single-fire-programmable-ignition-kit-for-big-twin-evo-53-644","title":"US 53-660  Single Fire Programmable Ignition Kit For Big Twin Evo 53-644","description":"\u003ch2\u003eSingle Fire Programmable Ignition Kit for Big Twin Evo\u003c\/h2\u003e\u003cp\u003eThis single fire programmable ignition kit replaces the factory ignition module on Big Twin Evo engines, letting the rider dial in timing curves for the build at hand, and it carries the 53-660 and 53-644 reference numbers.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis single fire programmable ignition kit is built for riders running a Big Twin Evo engine who want control over spark timing rather than a fixed factory curve. The kit fires the cylinders independently for a cleaner, more even power delivery across the rev range. It suits anyone tuning a carbureted or modified Evo build.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSingle fire operation fires each cylinder on its own coil signal for more consistent combustion\u003c\/li\u003e\n\u003cli\u003eProgrammable timing curves let the ignition be matched to carburetion, compression, and cam changes\u003c\/li\u003e\n\u003cli\u003eDirect replacement footprint for the factory ignition module location\u003c\/li\u003e\n\u003cli\u003eConstructed for the heat and vibration of a V-twin engine bay\u003c\/li\u003e\n\u003cli\u003eSupports both stock and modified Big Twin Evo configurations\u003c\/li\u003e\n\u003cli\u003eSimple wiring layout that follows the original harness connections\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003eFor Harley-Davidson Big Twin Evo models\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDialing in timing after a cam or carburetor change\u003c\/li\u003e\n\u003cli\u003eReplacing a failed or unreliable factory ignition module\u003c\/li\u003e\n\u003cli\u003eSetting a custom curve for a high-compression Evo build\u003c\/li\u003e\n\u003cli\u003eServicing the ignition side of a routine engine refresh\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e53-660, 53-644\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle fire programmable ignition kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBig Twin Evo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What does programmable mean for this ignition? \u003cstrong\u003eA:\u003c\/strong\u003e The timing curve can be set to suit the engine build instead of relying on a fixed factory advance. That matters most when cams, carburetion, or compression have been changed from stock.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does single fire need different coils? \u003cstrong\u003eA:\u003c\/strong\u003e Single fire ignition typically calls for a dual coil setup so each cylinder gets its own firing signal. Check what coil is already on the bike before installing.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":50553848430678,"sku":"ZZ3M00724","price":255.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_55706daa-dd28-4fc2-a383-ec088b9f033f.jpg?v=1790788277","url":"https:\/\/www.solidspare.com\/products\/us-53-660-single-fire-programmable-ignition-kit-for-big-twin-evo-53-644","provider":"Solid Spare","version":"1.0","type":"link"}