The axles are manufactured by American Axle & Manufacturing, Inc. The front is an AAM 9.25 and the rear is a hybrid AAM 10.5 with the larger axle shafts from the AAM 11.5. Despite the fact the axles have locking differentials, the rear axle is also a helical-type limited slip differential when unlocked. The axles are only available with a 4.56:1 gear ratio. Non Power Wagon 2500 Ram trucks only have 3.42:1, 3.73:1, or 4.10:1 gear ratios. 2010 models (along with other Ram trucks) received larger universal joints.