Quaife limited slip differential suitable for the new Swift Sport RZ / AZ from year of construction 2017. The differential lock offers a direct replacement for the original open differential for the Swift with 1.4 liter turbo engine. The differential works on the Torsen principle instead of the lamella principle. This means that the differential uses gears instead of disks to create the locking effect, which results in it engaging more smooth. The differential maximizes the force that can be transmitted to the wheels compared to an open differential that always delivers the force to the wheel that has less traction.