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Air Locker Install

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Our manual transmission truck has 3.73 axle gears, and we run 35-inch tires. The common idea would be to change to a lower gear ratio since we run a taller-than-stock tire. We opted to stay with the 3.73s when upgrading to the Air Locker, as the Cummins diesel has good torque and this keeps the engine revs lower on highway jaunts.