Modified Ford 9 Inch Differential Fluid Change Kits

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

Lucas P. explains how to choose the correct part for a Ford 9" third member build in order to achieve a bulletproof rear. You will find specific recommended parts to use from Speedway Motors.

Learn how to assemble one of our bolt on nine-inch Ford disc brake kits in this step-by-step guide.

Advantages of using Speedway Motors weld-on rear disc brake kit for a Ford 9-Inch rear end. Learn some tips for installation. This kit includes IMCA approved brake calipers.

In this video, we go through the process of measuring and cutting 9" Ford axles.

In this Tech Tip, John responds to a customer looking to upgrade the 8” stock differential in his Cougar to a 9” open diff.

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