The XRAY 355049 Center Differential Spur Gear is a precision 47-tooth component, machined to deliver consistent meshing and robust wear resistance. It is a useful upgrade for racers and hobbyists seeking steadier power transfer under high load. Because this variant has a 50 mm diameter, install it with the Center Diff Shimming Plates (#354032) and the Aluminum Center Diff Mounting Plate 7075 T6 (3mm) (#354055) to ensure correct alignment. If you are fitting the updated 48 mm hub on the XB9, those extra parts are not necessary.
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