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Dynatrac Diff Covers

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11. To cap it off, the ProRock 80 cover is even thicker than the already bulletproof ProRock 60 cover. A regular stamped Dana 60 front cover might be 1⁄8-inch-thick. The ProRock 60 cover is around 3⁄8-inch-thick. The ProRock 80 cover steps it up to 1⁄2-inch-thick. All the ProRock covers are made of nodular iron. And, like the other ProRock covers, our cover is slathered in Dynatrac’s signature silver vein powdercoating.