Coilover Kit - Tein - Street Advance Z - Lexus IS-F & Lexus IS250Tein Street Advance Z Tein Coilover Kit for Lexus IS F & Lexus IS250 TEIN Street Advance Z coilover kit was designed for drivers seeking improved handling on the street and at the track. A shortened shell case is utilized to allow the most piston stroke possible, which allows for a better ride at lowered ride heights, and increased grip at the track. Great for daily driving and occasion track use, whether it be at the drag strip, local circuit, or