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Upgrades that replace Traxxas #8579
1 aftermarket part sold as a replacement for Traxxas part #8579, 1 in stock now. Each card quotes the maker’s own fitment note; check it against your model before ordering.

TUDR9333R
Helical Rear Diff Ring/Pinion Gear, Steel 33/13T for UDR - Hot Racing
$33.88In stock
“Replaces TRA 8579” — Hot Racing’s description
