The XRAY 362371 Composite Angled Hub gives a straightforward 2mm adjustment to the front differential on an XB4'21, with three angle options to match different ride heights. These positions help keep the drive shafts straight and reduce unwanted angles when changing between low carpet setups and higher off-road ride heights. By selecting the appropriate hub angle you maintain cleaner drivetrain geometry and more predictable handling without extensive chassis changes. This is a tidy upgrade for racers who swap surfaces often.
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