they are preloaded this rzr is alot heavier than most all my friends call it the dozer it has a 1/4 inch thick custom steel bumper just dont want to spend the money on springs and it not be enough spring ???????
If you have the stock springs on your shocks you definitely need to get some new springs. Racertech sells a heavy spring that will probably be good enough..Call them and tell them what you have and get their opinion
i wish you had an idea of what it weighs. by the way you talk i'm afraid you may have to go figure out what spring rate you need then buy a set of linear rates. nothing wrong with that, but you're shooting in the dark right now if it really is that heavy.
That's really not that much, probably a 300lb spring all around. Also depends on how and where you ride.
I use RT duals springs 250/300 front/rear and mines close to same weight. I wanted max articulation as we are in crawling. Just rode Uwharrie last weekend since I changed springs and I think I am going to go to 250s inthe rear also. However, keep in mind I have a +6LT and XP shocks so it's not quite the same but gives to an idea.