I emailed them a while back and they said the older bikes and newer ones use the same kit. He had just not updated the website. That was about a month ago.They dont have them yet for the 500 Foreman.
From Hebco DistributingIf you need the regular lift kit, it's # 2201-HR50, same as the Rubicon. But if you need the long travel suspension kit, it's # 2202-HF46, same as the 02-04 Foreman 450