Despite the additional gears, ZF says the transmission is surprisingly compact, thanks in part to the fact that it uses planetary gears in place of a traditional design. Called the 9HP ...

A normal planetary gear set in an automatic transmission or ... steer dual rear wheels or a heavily loaded axle. At CES 2025, ZF announced it has signed a contract to provide five million dry ...

Sure, EVs have simple single-speed gear reductions ... or even four gearsets. ZF’s popular eight-speed has four planetary gearsets, and so do GM and Ford’s 10-speed. The former has five ...