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Week 3

This Week At Quaife Engineering:

The Mini Challenge UK Racing Series:

Quaife to this day supplies the MINI CHALLENGE UK series with our QBM2M 6-Speed Sequential Gearbox.

It was only right that when BMW decided to create a hardcore variant of their F56 John Cooper Works to celebrate this exciting race series, they approached Quaife for the vehicle’s ATB®️ Differential.

Click here for more information on this project and to take a look at some of our other projects from throughout the years –


The QDF18N Quaife ATB differential for the BMW 7 Series:

Available exclusively from Quaife distributors Birds – BMW Performance Tuning, the QDF18N Quaife ATB®️ differential for the BMW 7 Series range transforms your car’s performance.

Unlike a conventional LSD, the Quaife ATB®️ Helical LSD differential never locks harshly with a set pre-load of wheel slip across the driven axle. A true fit and forget differential that is backed by a lifetime warranty.

Click here for more information –


What is the torque bias ratio of the Quaife ATB®️ Differential:

What is the torque bias ratio of Quaife ATB®️ Differentials/transmissions?

Quaife does not specify torque bias ratio details. The Quaife ATB®️ differential is an all-helical gear design. The angle and tooth form of the helix used, the number of pinions used and many other factors, (including the individual vehicle application in question), all contribute to how the differential behaves and biases torque across an axle.

Each Quaife ATB®️ differential application is designed to offer the best compromise between performance and durability, which is why it is regarded as the industry benchmark design. We are so confident in these precision-engineered products, we offer a lifetime warranty for complete peace of mind.

With Quaife gearkits and transmissions, the torque is not quoted as there are many variables based on application. Quaife manufactures gearkits and gearboxes to suit motorsport suited ratios. Our sequential and dog engagement gearkits are specifically designed for faster gear changes.

Click here to view our ATB®️ Differentials –