Owners who have even upgraded to turbo systems in their cars all vote that this is one of the best mods on their car. Don't miss out on an oppurtunity for a modification that will allow you to accelerate quicker and corner better! At an additional cost, we also have the option to source the speedo gear and bearing required to replace your existing differential in your transmission. This works on both manual and automatic transmission. Quaife is so confident in their products, they provide a limited lifetime warranty on their differentials even if you use them to race!
Below is information that is listed on the Quaife product listings.
The Quaife Differential powers both drive wheels under nearly all
conditions, instead of just one. With an ordinary open differential,
standard on most cars, a lot of precious power is wasted during
wheelspin under acceleration. This happens because the open
differential shifts power to the wheel with less grip (along the path
of least resistance). The Quaife, however, does just the opposite. It
senses which wheel has the better grip, and biases the power to that
wheel. It does this smoothly and constantly, and without ever
completely removing power from the other wheel.
In drag-race style, straight-line acceleration runs, this results in a
close to ideal 50/50 power split to both drive wheels, resulting in
essentially twice the grip of an ordinary differential (they don't call
open diffs "peglegs" for nothing).
In cornering, while accelerating out of a turn, the Quaife biases
power to the outside wheel, reducing inside-wheel spin. This allows the
driver to begin accelerating earlier, exiting the corner at a higher
speed.
The Quaife also controls loss of traction when the front wheels are
on slippery surfaces such as ice and snow or mud, providing the
appropriate biased traction needed to overcome these adverse
conditions. The Quaife Differential provides constant and infinitely
variable drive. Power is transferred automatically without the use of
normal friction pads or plates seen in other limited-slip designs.
The Quaife's unique design offers maximum traction, improves
handling and steering, and puts the power where it is needed most. A
definite advantage whether on the track or on the street.
The Quaife is extremely strong and durable and since the Quaife is
gear operated, it has no plates or clutches that can wear out and need
costly replacement.
The Quaife is great for street driving or racing. Racers don't have
to put up with locking mechanisms or spools that created unwanted
understeer under power, or in the case of front-drive cars, even tear
the steering wheel out of their hands when cornering. Because it
behaves like an open differential during ordinary driving, street
drivers will have trouble telling it's there until pushing the car's
limits.
The Quaife has been proven in everything from SCCA Rally to Formula 1.
It provides autocrossers with such an advantage, it has become
"required" equipment for a winning effort.
More and more auto manufacturers are specifying the Quaife ATB
Differential as original equipment in their high performance models -
for good reason - it works!
The Quaife ATB Differential comes with something else other's don't have:
a Limited Lifetime Warranty. This warranty applies even when raced !
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Owners who have even upgraded to turbo systems in their cars all vote that this is one of the best mods on their car. Don't miss out on an oppurtunity for a modification that will allow you to accelerate quicker and corner better! At an additional cost, we also have the option to source the speedo gear and bearing required to replace your existing differential in your transmission. This works on both manual and automatic transmission. Quaife is so confident in their products, they provide a limited lifetime warranty on their differentials even if you use them to race! 
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