Just wanted to post as a thanks for helping me out and to pay it forward.
I bought a Victory Empulse TT used and only received 1 key. The selling dealer, my local dealer and Polaris all were clueless as to how to get a duplicate made, and honestly disinterested in helping me figure it out.
Ultimately, I found this post, stopped by and Aprilia dealership when I was on a trip and rolled the dice on what looked like the right blank. A few locksmiths wouldn't touch it, by I found one that gave it a roll with no guarantees and it worked! No RF chip activation needed.
Anyway, the Aprilia part number for the key blank is-- #AP8140711
You should be able to find one online for about $30, much less than the $50 I paid at the dealer.
Thanks all.