I just intstalled the Timbren Suspension Enhancement System on my 2017 and it worked extremely well. No impact to every day driving and it kept the rear from sagging with a sport quad in the bed, a RZR attached on a trailer, and probably another 200 lbs in the back seat. Ride was great while trailering. Total intall was about 30 minutes.
I just installed these on mine. Ues they help a lot when towning. I knew they rode lime crap unloaded so I was expecting it and ueah it does. Had planned on removing them for daily driving though. I find it hard to believe you have no impact from these day to day driving unless you have zero bumps on you roads.