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Upgrades that replace Traxxas #8978
1 aftermarket part sold as a replacement for Traxxas part #8978, 1 in stock now. Each card quotes the maker’s own fitment note; check it against your model before ordering.
SMXX3713F
Steel Helical Diff Ring/Pinion Front Gear, 37t/13t for TRA Maxx - Hot Racing
$54.88In stock
“Replaces TRA 8978” — Hot Racing’s description