The first rear passenger side shock absorber was easily installed in about 20 minutes. Unfortunately not without the driver's side. I don't know exactly why, but the shock didn't match the bolts. After some creative manipulation, some frustration and about two hours, I was able to install it. Ride is improved, although perhaps a tad stiffer than we'd like. I'm giving it four stars because I'm not sure if it was a bump or a car that caused the bolts to misalign. I think they're good value for money and if they were as easy to install as the first hit I'd say they're winners.