Your rear differential is one of the most unappreciated parts in your car or truck. It does what might be the hardest job of all of those components, multiplying torque from your transmission and ...

But in order to do this a quick-change rear must have a few extra components. This doesn't make the rearend any harder to operate, but it does require a few considerations to make sure everything is ...

Recently we tossed on a 4-inch lift and 33-inch Claws on a '97 Jeep Wrangler TJ that's equipped with an extremely tired 2.5L four-cylinder engine. Usually a tire that's only 33 inches tall won't rob ...

As far as car fluids go, differential oil is one of the most neglected pieces of maintenance. It could be because the effects of not changing differential fluid on time aren't as immediately obvious ...

Few vehicle modifications have as major an impact as changing gear ratios, and it's because your car's gear ratio directly translates to how it delivers power. Think about it: The gear ratio, or how ...