discontinued

I'm trying to replace a lower "ball joint" on an "88 4x4 trail boss, and I can't find a replacement part. Polaris says that they no longer have the part available and I've checked with Parts Unlimited and the listing that they have for this particular model is incorrect. The part looks like a...

i have a 95 scrambler 4x4 400. the intake boot has a large crack in the rubber. I tried 4 different silicones to seal it but it only holds for about an hour. I have looked locally and and online for a new intake boot and everyone said that this year was discontinued. why did Polaris discontinue...