Do I need inner axle seals with gear install?

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I see some kits (Nitro) come with them, some do not (G2, Revolution, of course they are less expensive)

Anyhoo I got 31K miles on my 2014 JKU. Is it best to replace the inner axle seals at this time?

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Article source: http://www.wranglerforum.com/f202/do-i-need-inner-axle-seals-with-gear-install-1977970.html