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Truetrac Oe

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3. The new 9.75 Truetrac (left) and the OE open diff. The Truetrac has a very effective 3.5:1 bias ratio, but is almost seamless while delivering it. The Truetrac is a long-term option: No clutch plates to wear out, and no reversion back to an open diff as the factory Traction-Locks will do rather quickly. It's proven to be great in ice and snow because it doesn't have clutches that must "break away" or slip the tires when traction is low and the wheels differentiate in a turn. Rather, the Truetrac delivers smooth power all the way around a turn without breaking the tires loose. The Truetrac housing is also much stronger than the OE diff, so it also delivers in the beef department.