Quaife ATB Limited Slip Differential

The Mountune Quaife ATB Differential is a helical limited slip differential designed for the Focus ST with an MMT6 gearbox. It serves as a direct replacement for the standard Ford open differential, enhancing performance and cornering. Unlike traditional plate-style differentials, the Quaife utilizes gears for smoother operation, automatically biasing torque away from spinning wheels.

This differential is constructed from Corus steel billets, CAD-designed, and CNC machined to ISO 9001 standards. It offers benefits such as maximized traction, minimized wheel spin, and reduced torque steer in front-wheel-drive vehicles. The design is maintenance-free and retains standard oil lubrication, with proven performance in various racing and road applications.