You can be extremely dumb with Rockwell axles. Roll up to a ledge, place your 44-inch tire on the up slope, then lay into your 400-horse engine and get ultraviolent until you either make it to the top or your engine blows. Rockwells don't care. They'll take whatever you give them, then say, "Thank you sir, may I have another." Plus, if you look hard enough, you can pick them up for almost nothing.
We're starting to see a whole lot more 2 1/2-ton Rockwell axles on the trail, so we thought we'd better show you the ins and outs of these behemoths before they become yesterday's news. Lots of magazines have covered them in the past, but most have just skimmed the surface. We visited Mark Boyce of Boyce Equipment and Clifton Slay of Poison Spyder Customs to bring you the dirt you'll need to plan and successfully execute an installation.