The Quaife ATB (Automatic Torque Biasing) differential is a unique type of limited-slip diff that substantially improves traction for powerful vehicles using only gear mechanisms. Quaife even supply FORD as original equipment for their Focus RS range. ...

Is Quaife a Torsen?

The difference between the gripper and the quaife is the gripper is a clutch type diff and the quaife is a gear type "or torsen" The Clutch type diffs work based on wheel speed, after one wheel spins x% faster then the other it starts locking up to slow down the fast wheel and speed up the slow wheel.

What does a limited slip differential do?

In basic terms, the limited-slip diff does what it says, as it's a device that limits the amount of wheelspin when the driven wheels lose grip when power is applied.