Drag Racing Differentials

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

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

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

Discover the best wheels for drag racing; the lightest options, beadlocks, and SFI certified wheels and learn how beadlock wheels work

Our guide will help you find the best drag tire for your application and needs

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

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

Estimate horsepower, trap speed, and ET with our drag performance calculator. Use it as a 1/4 mile time estimator or 1/8 mile ET to mph calculator.

Gear up for your first drag race with this beginner’s guide to NHRA rules and required safety equipment.

The '21 season marks the 70th year of NHRA drag racing. Here's look at a few great drag cars from that 70 year history from the Museum of American Speed.