DMI XR-1 Racing Differentials

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

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

In this Tech Tip, a customer asked about finding a set of disc brakes for his 1949 Ford F1 pickup, with one caveat. He wants to use the factory wheels.

Check out these tips on the large variety of Demo Derby headers that Speedway Speedway offers. Here, Jeremy will walk you through the many different styles and brands available showcasing which style might fit best in your application.

Get a good foundation on racing shocks and their different functions. Learn about the fundamentals and the pros and cons between various types of shocks available.

Looking for an inexpensive radiator for your derby car? Check out this video to see why the Speedway Motors Universal Aluminum Radiator is the perfect solution.

Should you use single or dual diaphragm brake boosters? Read our guide to learn which is best for your four wheel drum or four wheel disc brake system.