Catch The Wavetrac
The Wavetrac is brand-new differential made in the United States by Autotech Driveline. It's a gear differential that provides torque biasing, yet it has a couple of advantages over other torque-biasing differentials. When one drive tire has zero or nearly zero traction, most torque-biased differentials have a difficult time sending significant torque to the other tire. This is also true when transitioning from accel to decel. The Wavetrac uses wave-cut mating surfaces (shown in photo) on the side gears to provide torque to both tires in these situations. As the side gears move at different speeds, the wave surfaces climb each other. This pushes the side gears apart, creating internal load. The result is torque biasing in all drive situations and a smooth transition of power during the change from accel to decel. Basically, it's the perfect autocross and road race differential that should also provide extremely good traction on the dragstrip without any driveability issues on the street. The Wavetrac has a few other unique features, one of which is a transferable, limited lifetime warranty that even covers racing. You don't see that on many high-performance components!