->DYNATRAC PROROCK XD60
The Data: If you want what Dynatrac claims is the best ground clearance in the industry for this type of axle, look right here. Even though it is large enough to hold a 10.1-inch ring gear, the nodular iron centersection still clears obstacles that leave other rigs stuck, while boasting a 15 percent weight reduction. The brawniest offering features 3.75-inch-diameter, 1⁄4-inch-wall axletubes and will accept a full range of traction aids and gearing from 3.54 to 5.38. The differential cover is ribbed to deflect offending rocks and the 7⁄16-inch bolts are deeply embedded for protection.
Cool Stuff: Worried about gear oil reaching all parts of this monster? Fear not, the Dynatrac Dual Sump High Volume lubrication system makes sure every gear tooth is bathed in oil.