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Quaife ATB Limited Slip Differential

Often imitated but never improved, the Quaife Automatic Torque Biasing (ATB®) limited slip differential is the perfect traction solution that delivers noticeable performance benefits on any car using a factory ‘open’ differential unit.

Widely accepted as the upgrade of choice for road car owners and motorsport competitors looking to improve their vehicle’s traction, handling balance and braking capabilities, the Quaife ATB® limited slip differential is a direct replacement for a standard factory ‘open’ differential and is available for most popular front, rear and four-wheel-drive cars.

Originally introduced in the 1980’s, Quaife ATB® limited slip differentials are well proven, precision engineered, British made, highly durable and used worldwide in rallying, circuit racing, sprinting, rallycross and Time Attack, as well as the open road.

Diff montage

What It Does

Once installed, drivers will notice an immediate difference, as the Quaife (ATB®) limited slip differential automatically biases the torque across the axle to the wheel with the most grip. Unwanted wheelspin and slip are greatly reduced, resulting in less understeer on front or four wheel drive machines and reduced oversteer on rear wheel drive vehicles. Rear wheel drive cars with a Quaife ATB® limited slip differential become more controllable during oversteer moments, enabling drivers to exploit the full potential of their machines for the first time, leading to a more exciting, rewarding and rapid driving experience.

On front wheel drive cars the Quaife ATB® limited slip differential also delivers significant performance benefits during heavy braking. In this situation the Quaife differential’s inherent torque transfer characteristics work in reverse to transfer torque away from the locking wheel. This enhances deceleration, delaying the intrusion of electronic ABS systems and allowing drivers to brake later and deeper with the Quaife ATB® limited slip differential than is possible with a standard ‘open’ differential unit.

Add these benefits together and it’s hardly surprising that in outright performance terms the Quaife ATB® differential can make a remarkable difference compared to an ‘open’ differential. Back to back independent testing by Redline Magazine on a RenaultSport Clio 200 has proven that even on a short circuit lap times are reduced by over 2 seconds, making the Quaife ATB differential an excellent value for money upgrade.


Superior Quality, Safe Performance, No Wear, Lifetime Warranty

Fully compatible with manufacturer electronic traction control and anti-lock braking systems, the Quaife ATB® differential offers a number of key advantages in both functionality and service life compared to conventional plate-style LSD units.

Silent in operation (even during low-speed parking manoeuvres) the Quaife ATB® limited slip unit never ‘locks,’ making it progressive, safe and user friendly. Unlike plate-style LSD designs there are no clutches, ramps, springs or other wear prone components to replace at regular intervals, because the Quaife ATB®’s well-proven system of helical gears is extremely durable, plus it’s designed to use standard transmission oils.

This makes the Quaife ATB® limited slip differential a genuine ‘fit and forget’ upgrade that offers compromise-free performance and unbeatable reliability on the street, strip, stage or circuit, backed by a lifetime warranty.

Check out our comparison video of the ATB® vs LSD Plate differential:

Trusted By OEMs

The Quaife ATB® Differential has been used by some of the world’s most revered motor manufacturers in their high performance model lines. Ford, General Motors (GM), BMW, Lotus and Chrysler are just some of those who have chosen our signature ‘traction enhancer’. Models have included all three generations of Ford Focus RS, the Lotus Evora 400, Mini JCW Challenge and Chevrolet Cobalt SS. The latest model to feature the ATB is Ford’s highly sought after 2018 Fiesta ST hot hatch.

British Made Through And Through

All of Quaife’s products are precision manufactured from certified steel billets and inspected to ISO9001-2008 standards. Our ATB® Differentials are produced in the South East of England; at our Gillingham manufacturing hub in Kent. With advanced 3D CAD/CAM design suite software, robotic 3 – 4 and 5-axis CNC machining centres and tri-coordinate measuring machines operated by skilled personnel, Quaife redefines the boundaries of what’s possible in the field of mechanical precision engineering. As an ISO9001 registered company, quality control is a vital part of what we do. We have specialist Quality Inspectors trained to operate all of our temperature calibrated inspection machines. Rest assured, your ATB Differential comes with quality guaranteed, back up by our lifetime warranty.

Key Features

  • Safe, progressive and seamless in action, the Quaife ATB® differential never ‘locks’
  • Controlled power is transmitted to all driven wheels, to maximise traction and minimise wheelspin, particularly in slippery conditions
  • Fitment greatly reduces unwanted torque steer, understeer or oversteer
  • Designed to work in harmony with road car electronic stability and traction control programs
  • Improves braking performance on front wheel drive cars by reducing lock up and minimising ABS intrusion due to torque transfer action
  • Reduces tyre wear, especially on front wheel drive cars
  • Gear operated with no service components to replace – ever
  • Direct replacement for factory standard ‘open’ differential unit
  • Retains normal axle lubrication systems and maintenance schedule
  • Over 100,000 units sold worldwide since the 1980’s
  • Available for over 400 different applications
  • Backed by a Quaife lifetime warranty for both motorsport and road use



Visit the Quaife Shop to view and purchase the Quaife ATB Differential for your car

Mon to Thu 08am - 5pm and Fri 8am - 3.30pm

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