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Magnum Doubler Behind Transmission

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The Magnum is more expensive than a 203/205 Doubler, but it has some clear advantages—not the least of which is that it’s built from all new parts, unlike a used or rebuilt NP203. The gearing options are a 1:1 high range, 1.96 mid range, 2.72 low range, and 5.33 compound low range. The Magnum box weighs just 34 pounds, but the larger intermediate shaft makes it as strong as or stronger than a 203/205 setup. The shorter Magnum case also reduces the TH350/Magnum/205 assembly to just 42 inches (201⁄4 inches for Magnum/205 alone).

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