Drag Racing Differential Fluid

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

We help determine what are the best 10-spline quick change gear ratios for your street or racing needs

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

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

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.

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

Take your crate motor racing to the next level with these tricks and tips that won't get you in hot water with tech officials!

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.

Learn the difference between DOT 3 and DOT 4, or DOT 5 and DOT 5.1. Every type of brake fluid has a specific boiling point and water absorbing quality.