100% quality assurance tested, more responsive, less expensive, easier to install.Single fire coil that puts out over 30,000 volts with fast rise times and high energy.Intelligent over-voltage protection; Adjustable retard timing; Short circuit protection.Programmable electronic ignition kit, with the rotor, single fire coil, control module and plug wires.Programmable Features (PC):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 degrees;Programmable rev limiter;Separate programmable break-in rev limiter.Data Recording Features:Total engine hours;Time at wide open throttle;Number of engine starts (2 minutes running time counts as one start);Longest time operating at wide open throttle;Maximum rpm;Seconds near rev limit;Statistical analysis of time at rpm.NOTE: Programmable features and data recovery features require programming software kit or go to local programming.part number:53-660, 60-53-660-06.53-644, 53-646, 53-642, 53-662.Fitment:For 70-99 Harley-Davidson Big Twin (Except Twin Cam Models).For 71-03 Harley-Davidson Sportster (Except "S" Models).For Ultima Monster 140 C.I. Competition Series Engines.For Most Aftermarket Evolution / Shovelhead Style Engines (Like Ultima, S & S, Revtech, etc).Does NOT Fit Fuel Injected (F/I) Models.Vehicle compatibility charts are for REFERENCE ONLY. Check your vehicle with PartNumber below to match your needs.Colour:As ShownMaterial:ABS+MetalPackage Contents:1 x Single Fire Ignition KitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.