Synchro Hub 3-4 DUU 020311301D

Image is an example only, BRAND MAY VARY

A Synchro Hub is a crucial component in a car's transmission system. It plays a vital role in ensuring smooth gear shifting between the third and fourth gears. This synchro hub is responsible for synchronizing the rotational speeds of the input and output shafts, allowing for seamless engagement of the desired gear.

When the driver shifts from the third to the fourth gear, the Synchro Hub comes into action. It utilizes a set of synchronizer rings and blocking rings to match the speeds of the two shafts. As the driver engages the clutch, the synchro hub initiates the synchronization process by temporarily connecting the input and output shafts. This connection allows the rotational speeds to equalize, enabling a smooth transition between gears. Once the speeds are synchronized, the synchro hub disengages, allowing the driver to fully engage the fourth gear without any grinding or jolts.