Facebook marketplace is a great place to pick up used snowmobile parts and usually really cheap as well. Look for for sale powersports groups in your area or county. Just in my area I think there is 5-6 different ones just for powersports kind of stuff. Picked up 2 pair of Xtra-10 Front Fox Shocks with a Rear Rear Xtra-10 Fox Shock the newest upgraded one they released for 70 bucks total a couple years ago. Craigslist also has people selling used parts.