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Putting together an order for the Quaife ATB differential for the Fist IB6 transmission.. List is $1081.50. To get a worthy discount, there has to be 6 members ready to buy. The differentials will be manufactured by Quaife in the UK and shipped to the NA distributor, then drop shipped to you. Figure 6-8 weeks.

Take a moment to read this.

Perfect Circle Autosport customers with Focus ST's have fitted Quaife ATB differentials. They have experienced increased forward traction and a solid reduction of steering wheel snatch for quicker suspension set, traction and speed in curves. The Quaife and TVC do not work against one another.

I am not going to knock TVC, but it cannot replicate the Quaife ATB's performance. The most obvious tell TVC is not a full on performance solution, is the ST's system "anticipates" inner wheel spin, through the combination of wheel speed, steering angle, and an algorithm. Brakes are pulsed in "anticipation" of wheel spin. The Quaife works independent of wheel speed and steering angle, progressively transferring torque load full time.

For reference, the lifetime warranty is honored only for Quaife differentials sold through the North American distributor. So if you buy a differential outside of the USA, for use in the USA, you have no warranty. When registering your differential for the warranty, the serial number is required. Quaife keeps track of the unit serial numbers sold throughout the world. As such, only NA serial unit differentials are warrantied/serviced here in the USA. Just want to be clear as with certain manufacturers, North America will have exclusive selling rights, and only warranty parts here. There are businesses outside of North America that will sell to anyone, irregardless of the warranty details.

Let me know if you want in for spring delivery! Pm here, contact here, or call 507-721-3141

 

[PCA-1]

Torque is biased to the wheel with the least resistance. In a curve, that would be the outside wheel. TVC attempts to simulate what the Quaife ATB does, however the Quaife acts like a pendulum, constantly biasing torque. For instance, TVC does not engage unless threshold inputs for steering angle and wheel speed are reached. As such, TVC will not work in a straight line whereas the Quaife is always biasing torque, irrelevant to steering angle and wheel speed.

TVC has to slow down the inside wheel to work. The Quaife doesn't slow anything down. Biasing torque all the time results in better traction, in all conditions, with the exception of wheel lift, which for a FWD car is least likely.

 

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With TVC complimenting the Quaife ATB all bases are covered. Just pull them belts tight!