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The ST X coilover system for 2011–2015 Kia Optima (TF) excluding hybrid models balances everyday comfort with improved cornering and a broad range of height adjustment. Application-specific dampers and spring rates are tuned in Germany, and the kit uses a polyamide composite spring perch with stainless steel insert, galvanized struts, integrated dust protection and a multi-layer sealing package to maintain long-term adjustability for street use.
ST X-Height Adjustable Coilovers 11-15 Kia Optima TF - Excl. Hybrid
