I bought a pair of HD springs for my VR1 850 this year and installed them rite away and rode about 4 or 500 miles on them and ended up taking them out, it rode like a dump truck, when I took them out it was fine even with my cam on medium, I had my rear blocks on high so maybe that helped, I had all the shocks on stock settings too, 2021 VR1 137 850