Sorry man, it sucks that your machine is just sitting. I hope they dealership has talked about extending your warranty since you can't ride it.
Not actually that uncommon and not just Polaris.....Got a SAFETY recall notice for the wife's car in the mail. Said there was a recall on the car but the parts were not available. Dealership would call me when the parts were in. A couple months later, I called them about a second recall notice and that's when they said they could do that one and the previous one too.
Frequently enough, the engineers come up with what they hope is a solution and the company publicizes the news but no one has talked to the part supplier about how long it will take to get the parts to the dealerships.
Mine: 2018 Sportsman 850SP - 26" Bear Claw HTRs on OEM steel wheels(I really don't like the Aluminum ones)
Polaris Hand warmers, Mirrors.
Hers: 2019 Sportsman 450. 26" Bear Claw HTRs on Moose 427X Wheels.
2007 Sportsman 500 EFI, Polaris Winch, 25" Bear Claws QSC Clutch Kit, Hand Warmers
2001 Magnum 325 MOSE 12" rear wheel conversion. 25" Sedona Coyote tires
2017 Polaris Ranger 1000XP - Roof and front glass
2018 Kawasaki KLR650
2001 Magnum 325 Warn winch and Moose 60" plow-Sent to Daughter and Son-In-Law since his blew up
SOLD 2004 Sportsman 600 Twin