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Anyone know what's the thread size on a 2020 ultra Limited antenna stud is ? Doesn't seem to be SAE, I'm guessing it must be metric ?
Thanks in advance Jonnierock
I recently purchased HD's shorty antenna for my Street Glide Special. The fitment guide includes all 2020 models with the Boom! Box radio. The threads are metric, M6 X 1.0. I just tried screwing a 1/4-20 bolt into it, close but no cigar.
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