So based on the info under your pic for your machine the factory preload setting (which can be found in your owners manual) is 6.35" measured from the bottom of the shock cap to the top of your preload ring. Ideally with your machine ready to ride(meaning you, passengers, fuel and whatever cargo) you should be about 13.5" of ride height in the rear with factory sized tires. (Front should be at 14") So you can increase the preload to help raise machine closer to that 13.5" ride height. As stated the upper spring is really just a tension spring. This machine does not have a true dual spring setup. Only thing to be aware of is that Polaris recommends to not exceed more then an inch over the factory setting for preload. (So don't go more then 7.35" of preload) If you can't achieve ride height with that much preload the way to correct it would be to swap out factory springs with higher springs rates to handle the higher payload. As for the ride it should actually still feel fairly close to how it was before you added the weight. Only time it will feel "stiffer" is if you take the weight back out of it and leave the preload unchanged. Hope this helps.After installing my @CageWrx tire carrier and dropping on the spare, I'm sitting about 1.5" low in back. If I have my head wrapped around this correctly, I'm maxed out on height adjustment since the tender springs are fully compressed? Thanks!
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