A set of King rear shocks, the best sports shocks, need maintenance because their oil is leaking. I believe they only need the seals changed based on initial inspection. They were installed on a Sierra. The reason for selling is the lack of a specialized shop in Jubail, with shops available in Khobar, Dhahran, and I think Dammam. I preferred to install new ones and offer these for sale. For your information, the price of two new ones is 8000 SAR. Selling to the highest bidder.