A synchronization device for a vehicle transmission

The present invention provides a synchronizer for vehicle transmissions, comprising a hub teeth, the sliding sleeve and the synchronizer ring teeth, at least two threaded through the central axis of the tooth along a direction extending from the hub teeth formed in the hub hole. For synchronization of the present invention, can simply be detached from the shaft down with bolts, not only to avoid forced Remove the special removal tool life is shortened, but also to avoid Rama means limited to the phase with the teeth of the hub o problems gear outer diameter and the axial size of the gap.