The Rubicon Express Express Chromoly JK drag link is designed to convert the stock mounting location from underneath the knuckles to on top of the knuckles. This will improve the steering handling and geometry angles on JK vehicles that have used a track bar drop down bracket with their lift. The use of a tapered reamer will be needed. Specs:Fits 2007 to 2014 Jeep JK Wrangler, Rubicon Express and Unlimited,2 and 4-door models,Over knuckle conversion,Improve the steering handling and geometry angles, Notes:The use of a tapered reamer will be needed,Alignment required after installation ,