Gearing
verb
To provide with gearing; to fit with gears in order to achieve a desired gear ratio.
To be in, or come into, gear.
To dress; to put gear on; to harness.
noun
The ratio of a system of gears.
“The 4×4 could climb well, as it had relatively low gearing.”
Harness; working implements.
A train of toothed wheels and pinions.