Quaife ATB Front Differential for Audi RS3 (8V 8Y) & Audi TTRS (8S) DQ500 Transmissions

Differential Details:

Quaife part number QDF36R

H/D Crownwheel Bolts Included

OE Diff Bearings must be retained

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.

How an ATB Differential works

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.

Key Features

• Safe, progressive and seamless in action, the Quaife ATB® differential never ‘locks’
• Controlled power is transmitted to all driven wheels, to maximize traction and minimize 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 tire 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