Choose the inner doors. It is well documented that the polaris rock sliders are crap. Spend the money saved on something else or find some aftermarket rock sliders that you like.

 

Tell your dealer to adjust the doors !!!

 

i have the same problem 2021 xp4 pro
gave up on rock sliders for now
may trim lower inside door panels to clear then slide the weather seal back on
if thats possible

 

Dang, both of those accessories are on my build list, too! Guess it's time to try to find a good set of aftermarket rock sliders for the Pro XP 4.

 

My experience with Poo bumpers and SATV bumpers tells me SATV make a better product anyway, so...

 

I have a 2021 XP4 Pro and in the initial build I ordered the #2884831 (4-Seat Inner Door Closeoff panel) and 2884189-458 (4-seat Kick Out Rock Sliders). For months I have waited for the door panels and worried about all the posts I read about them not working together.
I got the door panels today and I can say that I was able to make them work together. I had to adjust the door hinges several times to get the best possible fit and then I stomped the rock slider down to get about 3/8" more clearance. The rock sliders still seem tightly mounted to the vehicle. I was worried about making them loose.
So the end result: The lower seal does touch the slider a bit on opening. Probably enough to wear a spot in the paint after a year, but not a big deal. There is still a bit of a gap in the front corner, so it won't be dust tight. I could probably adjust the doors again and remove the gap, but then it might rub harder on the slider and restrict opening. It's as good as it going to be for now.
For whatever it's worth, If I did it over again I'd buy the door panels and not the sliders.

If I had it

 

Just got done with a several hundred mile ride with the inner doors and low profile rock sliders. I had to adjust the doors and latch pin but they do fit together and close it all off quite well. I’m very happy with the fit and it significantly cut down on dust in the cab. 1/4 windshield and back window helped a lot also.

 

I have the aluminum Polaris Doors and the same Polaris side rails…. It’s the first thing that drive told me when he dropped my machine off. What’s weird is the passenger doors work perfect but the drivers side is tough to open and close.

 

Lots of posts in other conversations on this very issue. It's well documented that the doors just need adjusting a bit and they'll fit perfectly or nearly perfectly. I'm surprised your dealer didn't know it and doesn't know how to adjust the doors. I'm still waiting on my Ultimate so I don't have first-hand experience, but it sounds like a pretty easy fix. Good luck.