With extended use, or as a result of rough or incorrect gear changes, the components of a synchronised gear box can begin to show signs of wear. Precision interlocking is an essential part of the process, so even the smallest chips or cracks can have a noticeable effect on the smoothness and accuracy of your gear changes. If changing gear has become difficult or noisy, or your car keeps slipping out of gear, it might be time for some replacement synchro parts. Our extensive, high quality range includes components compatible with gearboxes in all makes and models of car.