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COOLINGQuaife Torque Biasing Differentials and Close Ratio Gearsets are available through AWR Racing for selected vehicles. AWR is also happy to provide installation services. See bottom of page for info on Quaife ATB Differentials.

5-Speed Quaife Synchromesh Close Ratio Gearkits

New 5-Speed Quaife Synchromesh Gearkits for Mazda Miata and RX7. Heavy Duty, semi-helical, close ratio gearsets are available in two configurations for both performance street and race applications. Available for 1.6 and 1.8 Miata and RX7. Quaife 5 speed Gearset for 1990-2005 Miata and 1981-1992 RX-7. Also fits 2006-2007 MX-5 5 speed box with slight modification. Available in two different ratio sets. Installation is available by AWR for $595.00.

RATIO SET 1 2.564 1.670 1.277 1.000 0.794

RATIO SET 2 2.350 1.550 1.240 1.000 0.881

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Ratio Set 2
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QUAIFE LIMITED SLIP DIFFERENTIAL - MX-5

Made to fit the 2006-08 Mazda MX-5, 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 ATB Differential comes with something else other's don't have: A Limited Lifetime Warranty. This warranty applies even when raced!

Installation in a customer supplied case is as little as $425.00 from AWR Racing.

MX-5 Quaife Differential
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Quaife Differential for Mazda G-Type Transmission

Quaife Limited Slip Differential for Mazda G-Type transmissions.

Fits 1993-00 626, MX-6, 1990-94 Protege LX, 2001-2003 Protege ES and Protege5 (not 1999-2000), 2003 MAZDASPEED Protege, 2004-2008 Mazda3 (not MAZDASPEED3), 1992-94 MX-3 V6 with G-type transmissions.

Made to exacting specifications, this should provide excellent traction control for your vehicle. Requires bolt kit, 0000-02-6501-BT, sold separately. Requires slight machining to selector fork and case for bolt clearance.

Quaife Differential for Mazda G-Type transmissions
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Bolt Kit (sold separately) Buy Now Button

Quaife Differential for Mazda F-Type Transmissions

Quaife Limited Slip for Mazda F-Type transmissions. Make sure which trans you have before you buy! Known to fit 1995-2000 Protege ES, but will fit some other F-Type transmissions... Some other vehicles may require custom axles (not listed vehicle)

Made to exacting specifications, this should provide excellent traction control for your vehicle. For F-type transmissions.

May require some slight machining of trans case and selector levers for clearance of new bolts.

Requires bolt kit, 0000-02-3501-BT, sold separately.

Quaife Differential for Mazda F-Type transmissions
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Bolt Kit (sold separately) Buy Now Button

Information on Quaife ATB Differentials

The Quaife torque biasing differential enables your car to accelerate quicker and corner faster. How?

By getting the power to the ground!

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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