This is the RDLogics Revo 2.5 and 3.3 Blue Aluminum Internal Differential Case Set.  This will do the front and rear of the truck, for increased durability.  If you are running an aftermarket engine or any performance upgrades, or you run your truck hard, your drivetrain is seeing additional wear.  This is one way to help cut down on repair costs in the long-run.

These are very strong, and they look awesome. RDLogics parts are built with the racer in mind, and they are constructed of the highest quality materials. These are a must for high-performance vehicles and people who want the best.