gears

1.

engranajes

one of a set of toothed wheels that work together to alter the relation between the speed of a driving mechanism (such as the engine of a vehicle or the crank of a bicycle) and the speed of the driven parts (the wheels).

:
a racing bike with ten-speed gears
1.

engranajes

prepare, adjust, or equip for a particular purpose or need.

:
they gear workouts to your specific needs
2.

engranajes

design or adjust the gears in a machine to give a specified speed or power output.

:
it's geared too high for serious off-road use