{"product_id":"new-53-660-single-fire-programmable-ignition-kit-fit-for-big-twin-evo-53-644","title":"NEW 53-660 Single Fire Programmable Ignition Kit Fit 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 1970-1999 Big Twin Evo motorcycles, delivering fully adjustable timing curves and firing each cylinder independently for cleaner combustion. Interchangeable with OEM references 53-660 and 53-644.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis single fire programmable ignition kit is a direct-fit replacement module for 1970-1999 Big Twin Evo engines, replacing the stock ignition with tunable timing maps. The kit fires each cylinder on its own coil signal for smoother idle, better throttle response, and more consistent combustion. It suits riders and builders running modified cams, carbureted or EFI conversions, and anyone who wants ignition timing control on an Evo Big Twin.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eProgrammable timing curves let you dial in advance for stock or built engines\u003c\/li\u003e\n\u003cli\u003eSingle fire operation drives each cylinder separately for cleaner fuel burn\u003c\/li\u003e\n\u003cli\u003eDirect replacement footprint for the factory module on 1970-1999 Big Twin Evo models\u003c\/li\u003e\n\u003cli\u003eCross-references OEM part numbers 53-660 and 53-644 for easy match\u003c\/li\u003e\n\u003cli\u003eSolid-state construction resists vibration and heat on air-cooled V-twin engines\u003c\/li\u003e\n\u003cli\u003eWorks with stock or aftermarket coils for flexible builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Harley-Davidson Big Twin Evo 1970-1999 models\u003c\/li\u003e\n\u003cli\u003efor Big Twin Evo with single fire ignition coil setups\u003c\/li\u003e\n\u003cli\u003efor Big Twin Evo engines with OEM 53-660 or 53-644 ignition modules\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTiming tuning on modified Evo Big Twin engines after cam or exhaust changes\u003c\/li\u003e\n\u003cli\u003eReplacing a failed factory ignition module on 1970-1999 Big Twin Evo bikes\u003c\/li\u003e\n\u003cli\u003eCustom builds running single fire coils for cleaner cylinder firing\u003c\/li\u003e\n\u003cli\u003ePerformance tuning on carbureted or EFI-converted Big Twin Evo powerplants\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\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1970-1999 Big Twin Evo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProgrammable timing, separate cylinder firing\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 Do I need a single fire coil to run this kit? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, this kit is built for single fire operation and should be paired with a compatible single fire coil for both cylinders to fire independently.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this fit my 1995 Big Twin Evo? \u003cstrong\u003eA:\u003c\/strong\u003e This kit is designed for 1970-1999 Big Twin Evo models, but fit can depend on the exact year, wiring, and ignition module connector, so verify your OEM part number matches 53-660 or 53-644.\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":50553848496214,"sku":"ZZ3M00725","price":255.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_26845fd4-6d96-468c-a25f-cfacd35841b6.jpg?v=1790788289","url":"https:\/\/www.solidspare.com\/products\/new-53-660-single-fire-programmable-ignition-kit-fit-for-big-twin-evo-53-644","provider":"Solid Spare","version":"1.0","type":"link"}