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Jk Tj

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There really aren't any noticeable tolerance differences in the front axleshaft assemblies. Axles sometimes have a tendency to break at their thinnest points. the thinnest point on both the Jk and TJ front axleshafts is 1.20 inches on the outer axleshaft and 1.240 inches on the inner axleshaft. the JK inner axle (top) is 30-spline and the outer shaft is 32-spline.