The axles are what really set this new Dodge apart from the 3500 models. The front axle is built by Magna and has a 10 13/16-inch ring gear, while the rear axle is a gargantuan Dana S111 with an 11 7/8-inch ring gear. Gear ratios are 4. 10, 4. 44, or 4. 88 depending on model and transmission choice