Polaris has a Max D ring Part # 2890894
https://www.polaris.com/en-us/search/?qc=global&query=2890894
Here is a video how they are installed
https://www.polaris.com/en-us/off-road/owner-resources/help-center/article/KA-05423/
I have had a XP4-1000 for 9 years. Ordered a AD5 Northstar on July 31. Still don't have an order number yet. I was told it would take 6 months for delivery. Waiting Patiently