1.5 Way
A 1.5-way limited-slip differential is the most common LSD upgrade option in performance and race cars. It is referred to as a 1.5-way because it functions under acceleration and to a lesser extent under deceleration. It provides differential locking characteristics under acceleration, maximizing power distribution to the wheels that need it most. Under deceleration, the 1.5-way LSD engages to assist in braking stability and smoother turn-in.
SuperQ (WPC treatment)
Every Kaaz limited-slip differential is offered in a SuperQ variant. SuperQ units feature reduced chattering and smoother engagement for an enhanced driving experience. With the help of WPC metal treatment, SuperQ limited-slip differentials also come with better heat dissipation and longer wear life with no break-in process required. Just like all of Kaaz’s limited-slip differentials, SuperQ units allow for locking rate adjustments.
Factory Differentials vs Kaaz
Most factory differentials are open, which means power is sent to the wheel that has the least resistance. It allows the wheels to turn at different rates such as in a turn, but it is also inefficient in power delivery. It causes single-wheel burnouts when you launch and unwanted wheel spin when you accelerate out of a corner.
Some manufactures equip certain vehicles with viscous differentials. This is a type of limited-slip differential, intended to offer the benefits of an open differential but without the drawbacks of unwanted wheel spin. This is achieved by a series of plates separated by a viscous fluid, which work together to optimize the power distribution sent to the wheels. Although this is more beneficial to performance than an open unit, a viscous limited-slip differential cannot know where to send the power until a wheel starts slipping. Most factory offerings in this case are sloppier than a performance-oriented limited-slip differential.
Kaaz limited-slip differentials solve the problems associated with factory equipment. Kaaz products are built and tuned to deliver higher strength, more traction, and greater stability. The result is quicker lap times and improved handling characteristics with the car under your control in a performance setting.
This part number fits the following applications:
| Make | YEAR | TRIM | MODEL | ENGINE | M/T | POSITION | FACTORY DIFF |
|---|---|---|---|---|---|---|---|
| Elise | 00- | Series2 | 1ZZ-FE | 5MT | REAR | OPEN | |
| Elise | 00- | 2ZZ-GE | 6MT | REAR | OPEN | ||
| Exige | 08- | Exige | 2ZZ-GE | 6MT | REAR | OPEN | |
| Exige | 08- | Exige S | 2ZZ-GE | 6MT | REAR | OPEN |
Technical Information
KAAZ differentials are designed and engineered to be used in competition motorsports. They are supplied from the factory to react quickly and strongly when it reaches the ex-factory preload (100% Locking). This is ideal for smooth, dry tarmac circuit use.
For some drivers/ conditions, a “softer” setting may be required. There are several ways this can be achieved, but the general option is by reducing the amount of friction surfaces. By re-arranging the order of the plates, various options are available depending on the total number of plates in the differential.
The diagram below shows the stacking option for your application. The differential has the same number of plates on both sides and the plate configuration MUST be the same on both. Below shows just one side.
*The original quantity of plates must be retained, as well as the Belleville (cone) spring washer(s)
