Description
Similar to our H5 Big Twin magneto, this fully automatic impulse-coupled unit slips into where the generator was. You will need to remove cam cover and replace generator idler gear with magneto drive gear. Some stock removal from a cast rib in the cases above bushing will be required. Due to it's impulse-coupler, unit puts out a killer spark, at retarded start timing, no matter how slow motor cranks. Fits all generator Sportsters, K models, and 45 Flatheads. If you have a K model or 45, please call before ordering.
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