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Replacement Shaft

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We've heard tales of retrofitting 1 1/2-inch axles into 60s that came with 1 5/16-inch shafts, but we've never seen it done and Dynatrac's McGean is skeptical. He cautions that the spindles would have to be bored out so much that they'd be too thin and weak to bear the weight of the 4x4 and the stress of tough trail work. But custom-axle companies, such as Moser Engineering, can supply 1 5/16-inch super-beef alloy replacement shafts that match or exceed the strength of stock 1 1/2-inch axles.