Axles:We use them and abuse them, every 4x4 has them, and changing parts on them is what we do to turn bigger tires, climb steeper hills, and crawl massive boulders. But what are all those parts in an ...

4x4 axles come in all shapes and sizes for recreational and competition wheelers. From the heavy-duty 21⁄2-ton Rockwell to the classic lightweight Dana 30, each axle has its own definitive qualities.

Whether independent front suspension (IFS) or a solid axle setup is better for off-roading depends on how you plan to use your off-road vehicle. A solid axle has advantages if your off-road adventures ...