Wavetrac® Torque Biasing Differential - Innovative: Wavetrac®: Gives you quicker acceleration and faster cornering by driving both drive wheels instead of just one. And, it offers improved no-load performance when compared to other helical gear differentials on the market.

Fits all 2001-2013 Gen 1 and Gen 2 front wheel drive MINIs with 6 speed Getrag manual transmission.

Patented Wavetrac® design automatically improves grip in low traction conditions and greatly reduces the dreded torque steer problem. Wavetrac is truly innovative and unlike and other torque biasing differential design.

Features:

• Superior Materials: High strength 9310 steel gears are used in case-hardened billet or forged steel bodies.
• ARP® fasteners are used throughout the differential.
• Maintenance Free: As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds.
• Limited LIFETME Warranty: All Wavetrac® differntials include a transferable, limited lifetime warranty.

Additional Infrormation:

CLICK HERE for full technical description

All gear LSDs (including Torsen®, Truetrac®, Quaife®, Peloquin, OBX, etc.) work in basically the same manner: they divide the drive torque between the two axles, applying drive to each side, up to the available grip of each tire. The amount of drive torque one wheel can get over the other is described as the bias ratio, a measure of the torque split across the axle.

Standard, open differentials have a bias ratio of 1:1. They can only apply as much drive torque as there is available traction at one wheel. When one wheel loses grip, the total available drive is lost as well (at a 1:1 ratio). All your power goes out the slipping wheel - along the path of least resistance.

Torque biasing differentials offer increased bias ratios over open differentials. For example, if a diff has a bias ratio of 2.5:1, then it can apply drive torque to the wheel with the most traction (gripping wheel) at 2.5 times the traction limit of the wheel with the least traction (slipping wheel). This is a significant improvement over an open diff… most of the time.

The problem is that when one tire has LITTLE or NO grip (zero axle-load), the other wheel gets ZERO DRIVE, because (basic math here): 2.5 x 0 = 0.

Lift a wheel (or substantially unload a wheel) and you get zero axle-load on that side - that means that during the time the wheel is unloaded, the typical diff will NOT power the wheel that’s still on the ground. No matter how high the bias ratio, you get no power to the ground.