Bought and installed in March 2020 but now (July 2021) they are out of service. Easy to install and work well before they fail. Less expensive than OEM parts, but lifespan is too short. Will I buy again? Probably not, and you can easily convert the air suspension to shock absorbers. Good luck if you go this route. PS… Due to Covid the Sequoia hasn’t ridden since these bags were installed so usage didn’t matter. My 0.02 cents for what it's worth.