No hassle
returns
Live in-stock
inventory
Save over
60% retail
You have no items in your shopping cart.
June Sale: $1,102.46
In Stock
May ship from manufacturer
Free Shipping
Part number: QDH3Y
Competitor Pricing
Product Details
Quaife QDH3Y ATB Differential
Products specifications
Position Front

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 dont 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 Quaifes 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 dont 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 its there until pushing the cars 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!

Reviews
Add your review
J
Ordered some tires on Friday and got them on Monday. How much better shipping time can you get!! Best price I could find too.
A
Site use was easy, and product shipped promptly after ordering.  Price was the best I could find, would use this business again.
B
Item arrived quickly and as described. Thanks
B
Simple and fast purchase would do business with again.
Show All Reviews
Fitment
Subaru Impreza
2012 Subaru Impreza WRX STI / WRX STI Limited / WRX STI Special Edition
2011 Subaru Impreza WRX STI / WRX STI Limited / WRX STI Special Edition
2010 Subaru Impreza WRX STI / WRX STI Limited / WRX STI Special Edition
2009 Subaru Impreza WRX STI / WRX STI Limited / WRX STI Special Edition
2008 Subaru Impreza WRX STI / WRX STI Limited / WRX STI Special Edition
2007 Subaru Impreza WRX STI / WRX STI Limited / WRX STI Special Edition
2006 Subaru Impreza WRX STI / WRX STI Limited / WRX STI Special Edition
2005 Subaru Impreza WRX STI / WRX STI Limited / WRX STI Special Edition
2004 Subaru Impreza WRX STI / WRX STI Limited / WRX STI Special Edition
Subaru Legacy
2006 Subaru Legacy GT spec.B
Return Policy
Returns are easy at THMotorsports
Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy