Our Services

What is a gear ratio?  In relation to an automobile, it is the ability of a smaller gear (input gear or pinion gear) to turn a larger gear (output gear or ring gear) in order to achieve a certain goal:
High Speed or High Torque.

Larger tires require a HIGHER number ratio (.456 .488 .513) to turn them properly. Smaller tires or high speed applications require a LOWER number ratio (.241 .256 .273) to achieve a higher overall speed.

We work on all makes and models.  We carry a large inventory of new and used gears. When you need a gear ratio change and your differential done right, call
The Original
Arizona Differential.

We are conveniently located on Weldon Ave, one block south of Indian School Rd, and two blocks west of 27th ave.

3601 n 36th ave  Phoenix Arizona 85019

Call us: 602-272-4600