{"product_id":"xa-coilover-kit","title":"XA Coilover Kit","description":"The ST Suspensions XA coilover kit offers precision ride height and handling customization, developed using advanced KW damping technology. This system features 16-click adjustable rebound damping, allowing users to switch between a comfortable ride and sportier, track-ready performance on the fly. The dampers are encased in galvanized steel housings for durability, while the height is adjusted via a continuous thread on the strut, enabling adjustments even after the kit is installed.\n\nThe adjustable spring perch is engineered from a friction-optimized polyamide composite material with a stainless steel insert, which helps prevent the oxidation issues often found in anodized aluminum designs. Each kit includes a hard-chromed piston rod and a monoblock guiding and sealing package for consistent performance.\n\nNote: For Z4 vehicles originally equipped with electronic damping, the factory electronic control system must be deactivated. A dedicated deactivation kit (KW Part No. 68510145) is required to ensure proper operation following installation. This coilover kit is designed specifically for 2009-2016 BMW Z4 (E89 chassis) models, including the sDrive30i, sDrive35i, and sDrive35is configurations.","brand":"St suspension","offers":[{"title":"Default Title","offer_id":52686311686456,"sku":"18220072","price":1399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687393446.jpg?v=1784871454","url":"https:\/\/store.motormia.co\/products\/xa-coilover-kit","provider":"MOTORMIA","version":"1.0","type":"link"}