Wavetrac Differential for Mini Cooper S 6MT 2001>

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, etc. It happens more than most people realise.

We won’t go into torque bias ratios or the concept of how torque biasing diffs work at this point. Let’s get to how the Wavetrac affects performance:

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. This is normal for track driving. The issue is that for the brief moments your inside tire becomes unloaded when bouncing over curbs, your other wheel is not getting drive - is not putting power down. Gear diffs need load on both axles in order to function. The result on a track (or during aggressive driving) is that there are many times when a normal gear diff supplies only intermittent power to the gripping wheel.

Now, same track with Wavetrac: 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. That makes the car more predictable, and faster overall.

Other benefits:

• Patented Carbon Fibre Bias Plate for the pinions. All other gear type LSDs run the pinions on the housing, meaning the friction from 0 miles is different to 100 miles, thus effectiveness is reduced over the life of the diff. With the Wavetrac performance is consistent with the Carbon Fibre bias plates!
• Patented Wave Profile eliminates the effect of a near to and zero load condition drive ability issues found in all other gear type ATB LSDs.
• ARP Bolts used throughout for superior faster reliability. 
• 9310 steel gears run in billet or forged steel bodies. 
• Manufactured & Designed in the USA

1. Fitment / Tolerance Issues on Some Units

Some owners have reported difficulty physically fitting the differential to the axles:

• A common post from a Mini forum describes a scenario on an R53 where the aftermarket axle wouldn’t fully slide into the Wavetrac diff even though it fit OEM and other LSDs; the diff had to be sent back to the manufacturer because the internal splines didn’t line up with several axles.

2. Machining/Quality Control Variants (Anecdotal)

There are occasional community mentions of machining or tolerance variations on earlier Wavetrac units — particularly early R56 platform builds — where the parts didn’t match gearbox tolerances perfectly and needed adjustment:

3. Clicking or Mechanical Noises That Can Be Misinterpreted as Faults

A very common topic across various cars with Wavetrac LSD (and consistent with gear-type LSD behavior) is audible clicking or clunking under torque transitions:

• Owners often hear a single click/clunk when accelerating off the line or during throttle lifts — even with no obvious driveline damage.