International Differentials

Learn what gear oils do for your differential and how to choose the best gear lubricant for your application's needs

The pros and cons of a welded diff vs open diff, plus what to know before learning how to weld your differential.

A brief overview of the steps Speedway Motors takes to ensure you get a quality differential.

A short article explaining the main differences between open and limited slip differentials.

GM’s 10-bolt rear axle has been around since the 1960s, here’s how to determine if your junkyard find is worth taking home

Comparing open diff vs limited slip vs locker differentials. Learn how each works, pros and cons, and which is best for your build.