Spin Free Locking Hub Conversion Kit for Dana 44. Locking Hub Conversion Kit for '00-'01 Dodge Dana 44. The Yukon worry free Spin Free Kit replaces the vulnerable and expensive factory unit bearings with tapered bearings and races. The result is not only a design which is easier and more economical to service, but one that offers significant increases in mileage per gallon. This hub kit also includes WARN premium locking hubs, giving you more driving selectability. This kit includes new rotors, spindles, high strength Yukon 4340 Chrome-Moly outer axles, WARN premium locking hubs, Timken bearings, high quality seals and all hardware for installation.