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Sounds like you've answered your own question... It's either a T-45 or T-50, buy both and be done with it. You'll use both if you work on the bike any extent more. Also pick up a T-27 if you don't already have one as most sets skip the T-27 and Harley uses that size in a few places.
I believe it is a T-45, same as the front triple-tree clamp bolts.
My SG had throw-over bags with Krome-Werks chrome saddle bag supports that I didn't want for daily riding so I scored some take-off bolts and nuts to go back original. I didn't like that they were not chrome or stainless and I was having clearance issues on my SG because of my max-wide tire and the nuts on the back side. So I flipped them around and installed a chromed acorn nut with LockTite on the show-side I am so-so on the look but it is cleaner than a dull plated bolt head and there are no more issues with my tire anymore.
My son replaced them on his LR with some aircraft engine stainless steel socket cap screws that have been laying around in my garage for 40 years or so that he polished up the caps to look like chrome...The rear width on his '04 LR is slightly wider than my '01 SG so there are no clearance issues with the same size tire.
Last edited by skinman13; Feb 22, 2016 at 10:19 AM.
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