Quaife QDF13J-3 ATB Helical LSD differential for Ford Focus

Price:   $1,166.50

Quaife QDF13J-3 Ford Focus Mk2 ST225 (6-speed - M66) Quaife ATB Helical LSD differential

Quaife Mitsubishi Lancer Evo X (Front) ATB differential

Quaife ATB Helical LSD differential is suitable for the Ford Focus Mk2 ST225 (6-speed - M66). A direct replacement for the standard Ford Focus Mk2 ST225 (6-speed - M66) open differential, the Quaife ATB Helical LSD differential transforms your car’s performance.

Unlike a conventional plate-style limited slip differential, the Ford Focus Mk2 ST225 (6-speed - M66) Quaife Helical LSD ATB differential relies on gears rather than clutch plates for its operation. That means it is much smoother in operation.

The Ford Focus Mk2 ST225 (6-speed - M66) Quaife ATB Helical LSD differential never locks harshly with a set pre-load of wheel slip across the driven axle, like a conventional LSD. Rather, the Ford Focus Mk2 ST225 (6-speed - M66) Quaife ATB Helical LSD differential automatically biases the torque away from the spinning wheel across the axle, to a constantly varying degree, and never locks.

The Ford Focus Mk2 ST225 (6-speed - M66) Quaife ATB Helical LSD differential has many benefits over a standard open differential, including maximising traction and minimizing wheelspin, eliminating torque steer and snatching in front wheel drive cars compared to conventional LSD units, and a maintenance-free design which retains the standard oil lubrication.

The Ford Focus Mk2 ST225 (6-speed - M66) Quaife ATB Helical LSD differential is proven in circuit and drag racing, rallying and road use, and is produced from Corus steel billets, and is CAD designed and CNC machined, then inspected to ISO 9001 standards.

With over 370 applications, the Quaife ATB Helical LSD differential is second to none. Accept no imitations!

Quaife ATB differentials are used by Ford, General Motors and Daimler-Chrysler as original equipment.


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  • Model: QDF13J-3
  • Shipping Weight: 25lbs
  • 3 Units in Stock
  • Manufactured by: Quaife




This product was added to our catalog on Monday 30 May, 2016.