If you buy a product they call "spools", these thread in to those female blocks.
Doing so lets you use a rear stand. I'm glad you brought this up as its a good reminder.
On this bike, a large spool can hit the exhaust system When this happens, it usually rips off the spool from the swingarm and its ruined. So, if you choose to add them, be sure its something small...mini spools.
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