Spindles & hubs usually aren't sold together. The hub fitting is based off the bearing type & size. The 3rd gen, spindle is set-up for the even A-arms and have a heavier-duty construction, the 1st & 2nd gen. spindles are set-up for un-even A-arms and need additional re-enforcement (when stock) for longevity. Since these spindles use a 5/8" bolt then finding a hub with a 5/8" bearing is needed.
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