A CV joint is an assembly of bearings and cages that allows for axle rotation and power transmission at a number of different angles. CV joints consist of a cage, balls, and inner raceway encased in a housing covered by a rubber boot, all of which is filled with lubricating grease

Constant velocity (CV) joints are mechanical power transmission components that provide rotational power at various angles. They provide the same output velocity in relation to the input velocity, independent of the angle they are operated at.