1、Application: Motorbike electronic ignition system fits for Big Twin 1970‑1999 (Except Twin Cam), suitable for all engines up to monster 140 C.I. 2、OE Number: The part number of electronic ignition kit for reference is 53‑660, please confirm whether it is consistent with the OE you need. 3、Single Fire Coil Design: Ignition kit includes single fire coil that puts out over 30,000 volts with fast rise times and Intelligent overvoltage and overcurrent protection. 4、Multi Protections: Programmable electronic ignition kit is safe and reliable, with intelligent overvoltage over current protection, adjustable retard timing, short circuit protection. 5、Ideal Replacement: Original standard, the manufacturing in accordance with strict OE specifications, direct replacement, perfectly fit your vehicle. Item Type: Programmable Ignition Kit Material: Metal + rubber + ABS OE: 53-660 The following programmable functions and data logging functions require a programming kit (programming kit not included) The programming kit is not required for normal day to day use. (PC) Programmable features: 8 Point fully definable wide open throttle curve. 8 Point fully definable part throttle curve. Rev limit programmable in 50 rpm steps. Programmable dead cranking revs 0 - 10. Programmable rear cylinder offset, total of +/- 10°. Programmable rev limiter. Separate programmable break in rev limiter. Data Recording Feature Total engine hours. Number of engine starts (two minutes running time counts as one start). Time at wide open throttle. Longest time operating at wide open throttle. Maximum rpm. Seconds near rev limit and statistical analysis of time at rpm. Application: Fits for Big Twin 1970-1999 (Except Twin Cam) Does NOT fit FUEL INJECTED (F/I) Models 1 x Programmable Ignition Kit (22Pcs)