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The gear ratio of front & rear axles will be the same on a particular truck. There are two different available OEM axle ratios: 2.94 and 3.36
The Titan front diff was improved to strengthen the housing and resist half shaft pull out in 2006.
2004-2007 Titan rear axles are 32 spline and there is an available TruTrac LSD and Arb locker.
2008+ Titan rear axles are 35 spline and larger diameter and there is no available aftermarket LSD or locker. There is an available factory e-locker that is only available oem.
The Titan front diff was improved to strengthen the housing and resist half shaft pull out in 2006.
2004-2007 Titan rear axles are 32 spline and there is an available TruTrac LSD and Arb locker.
2008+ Titan rear axles are 35 spline and larger diameter and there is no available aftermarket LSD or locker. There is an available factory e-locker that is only available oem.