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Prorock 80 Center Section

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4. The ProRock 80 is a bit bigger than its little ProRock 60 brother with 1 inch less ground clearance, but the ring-gear-hugging nodular iron housing design has more ground clearance than any other axle with a 101⁄2-inch or larger ring gear. As a comparison, the ProRock 80 nodular iron housing has 1⁄2 inch more ground clearance than the average GM Corporate 14-bolt and has a ring gear almost an inch larger. With a smooth bottom that is barely 4 inches wide, it makes for a snag-free axle and not a 1-ton anchor.

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