I installed these and rode on the lowest setting, since I read so many talk about how stiff they were. I found them really rough. After reading more about them I started adjusting and taking out for a ride. I found my setting for solo and another for 2 up. It really is night & day over the HD Premium Adjustable shocks. My daughter and girlfriend still tense up when going over bumps, now it’s out of habit, not because it’s necessary. These shocks have made the front the weak point and now I’ll have to do that. Worth the money and Biohazard was the cheapest online, with really quick shipping.