Just did the 3" Polaris RZR bracket lift on our Z1000 last week. We have minimal mileage on the bike since that was done though. Maybe 2-3 hours of trail riding out in Texas. But it was pretty much all dry trails and hill climbs. The bike is running great, suspension feels solid, and no new squeaks/complaints from any of the 4 corners. We are going to pull it all back apart and powder coat the brackets black. They came silver and stick out like a sore thumb.
Really looking at 4" portal lifts next though. That's going to be the 2021 winter project I believe.