53-660 Upgraded Single Fire Programmable Ignition Coil Kit Compatible with Harley-Davidson 1970-1999 Big Twin/ 1971-2003 Sportster(Excluding the 1200S model and all EFI models)

53-660 Upgraded Single Fire Programmable Ignition Coil Kit Compatible with Harley-Davidson 1970-1999 Big Twin/ 1971-2003 Sportster(Excluding the 1200S model and all EFI models)

• Fitment: Compatible with Harley-Davidson 1970-1999 Big Twin Series (including Shovelhead and Evolution engines) covering Dyna, Softail, Electra Glide, Fat Bob, Bad Boy, and other models; 1971-2003 Sportster (XL) Series(Exclusions: 1200S models, all EFI models);For aftermarket engines: S&S, Ultima, Revtech, and other EVO-based engines.
• Replace part Number: 53-660, Ultima 53-660.
• Function: Precisely controls ignition timing, improves power and reliability, suitable for modifications and harsh riding environments.
• Applications: Used to replace or upgrade the OEM ignition module for Harley-Davidson carbureted models, improving engine power, throttle response and reliability.
• After-sales service: We are committed to excellence in customer support. Should any issues arise, please contact us. Our team will respond promptly and ensure your complete satisfaction.