When it comes to wheeling, options rule. There is a new player in the transfer-case aftermarket, and the new STaK 4x4 three-speed Monster Box has more options than anything else currently available.

Just as Dana 60 axles have found their way into small and mid-size 4x4s, heavier-duty transfer cases are also appearing in these vehicles in greater numbers. Heavy-duty, however, is a relative term.