In garages, on trails, and around campfires, debate will always rage over what single modification is most effective in creating a capable 4x4. Is there one magic mod that can dramatically improve ...

There are many possible differentials to use in the rearend of your car. Before making your decision you should determine how you will use the car, how streetable you want it to be and how much you ...

Lockers are expensive and open diffs suck-a-duck off-road, so for chump-cheap traction, it’s hard to beat the age-old method of simply welding up your differential spider gears to create a mini spool.

The rearend is one of those glamourless parts of a street machine that usually only gets attention when it breaks. "If it ain't broke, don't fix it" is a common but dangerous and potentially very ...