Simply put, Wavetrac is the only gear diff on the market that does not lose all drive when one axle is unloaded. Axles become unloaded in aggressive driving, track cornering, extremely slick surfaces and It happens more than most people realise.
For example, you have a conventional gear diff (OEM, Quaife, MF, OBX, Truetrac, Torsen, etc.), you're on a race track for a track day and during cornering your inside wheel bumps over the curbing, which is normal for track driving.
The issue is that for the brief moments your inside tyre becomes unloaded when bouncing over curbs, your other wheel is not getting drive - and is not putting power down.
Gear diffs need load on both axles in order to function and in this scenario, or during aggressive driving is that there are many times when a normal gear diff supplies only intermittent power to the gripping wheel.
Imagining the same scenario with a Wavetrac differential fitted: the patented cam device in the Wavetrac prevents loss of drive when that inside wheel is unloaded. The device is able to generate a load inside the diff (to replace the lost load as it happens) that can then be biased to the gripping wheel - in the end making more consistent power delivery through a corner. This makes the car more predictable, and overall, faster.
**Please note these are made to order, lead times may vary on vehicle selection**