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Inside the housing is a set of 3.73 Motive gears around a 35-spline Wavetrac. The Wavetrac is exceptional at getting the torque to the rear wheels for optimum traction, and its design is the only one that carries a lifetime warranty, even when used in racing applications. Moser set up the unit to work with our car’s three-channel ABS system (located on the top of the housing). For a bit more strength, they also installed their 356-T6 aluminum rear cover, which helps to reduce the amount of ring gear deflection for better longevity.