This KAAZ diff can be supplied as Standard, or as an updated SuperQ unit.

It is known that the MX-5 ND Differential is a very weak differential,  as soon as it has to work hard on the Race Track and can cause issues.

With the Japanese made Kazz Limited Slip Differential this will never become a problem ever again, locking up both rear rear wheels when you need maximum traction. 

We know how good this Kazz Diff is because we have used it in our own Race car for the last ten years. 

Kaaz Limited Slip Differentials are renowned in the motorsport community for being rugged, reliable and ready to go out the box.

This diff can be supplied as standard, or as an updated SuperQ unit. The SuperQ range feature treated low friction plates which benefit from quieter and smoother performance. As well as this, SuperQ units benefit from longer plate life span, increased heat dissipation and don’t have a break-in period.

Specifications

• Torque 5.5-8.5 Kg/m
• Ramp angle 25/45
• Cone Springs x2

Plate Type Diffs

Plate type Limited Slip Differentials (LSD) use plate packs (sometimes called clutch packs) to effectively lock the entire rear axle under load.

It does this by using a cross pin and a ramp ring. The cross pin is a long cylindrical pin that sits in the middle of the diff between either one or two ramp rings.

These ramp rings have literal ramps machined into the side, when under load the whole ramp ring rotates causing the ramps to ride up against the cross pin, forcing the rings apart. As these ramp rings are forced apart, they push several friction plates together on either side of the diff.

This essentially acts like a clutch, but instead of applying the clutch to a moving shaft, it applies it to a stationary plate until there is enough friction between the plates to momentarily lock the diff.

What does 1.5 way mean?

LSDs come in 3 different “ways”, 1-way, 1.5-way and 2-way. This has to do with if the diff locks under acceleration, deceleration or both.

A 2-way diff is capable of locking under both acceleration and deceleration. It does this by having exactly the same ramp angles for both acceleration and deceleration.

1-way diffs are only capable of locking under acceleration. This is the “kindest” type of LSD and is normally only used for fast road driving.

A 1.5-way diff aims to find a middle ground between the two by making it easier to lock the diff under acceleration and harder under deceleration. This is done by having a lower ramp angle (this is the angle of the ramp that is machined into the ramp ring) for the acceleration side than the deceleration side.

This diff runs a 25/50 configuration (Accel ramp angle / decel ramp angle) meaning it would lock easier and more frequently under acceleration due to the shallower ramp angle on the acceleration side.

KAAZ Corporation is the top brand name manufacturer and supplier of Limited Slip Differentials (LSD) for racing and street performance in Japan. Many top teams in various racing categories from drifting to road racing use KAAZ LSD units for their team cars. Especially in the drifting scene, KAAZ Solid LSD is considered the top choice LSD from beginners to professionals. 

The LSD is activated by pressuring the clutch plates which will produce a very strong locking performance and superior response during performance driving.