Less work equals more mpg.
The result is not only a design which is easier and more economical to service, but one that offers significant increases in fuel efficiency because there are fewer rotating parts in the drivetrain.. 12-17 Dodge 2500/3500;Includes new wheel hubs, spindles, high strength Yukon 4340 Chrome-Moly outer axles, premium locking hubs, high quality bearings, high quality seals and all hardware for installation;California Residents: WARNING The kits replace the failure prone and expensive factory unit bearings with tapered bearings and races. These hub conversion kits also include low-profile Yukon Hardcore Premium Locking Hubs, for quick changes between two-wheel and four-wheel drive.