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Big Oly Tt Dirt Tech Housing

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The 9-inch-style rearend combines a Dirt Tech housing with a Currie/Gearworks third member. The third member holds a 10-inch, 5.14:1 ring-and-pinion set that’s bolted to a full spool. Summers Bros. 300M axleshafts take the power from the third member out to the Summers Bros. full-floating hubs that sit at each end of the Dirt Tech housing.