The GPM TXMM1137S kit replaces standard units on the Traxxas Mini Maxx Monster Truck with components made from 4140 carbon steel and 7075 alloy. Supplied as front and rear complete differentials, the set uses a 13T/37T gear combination and a 1.0mm module to give stronger tooth engagement and reduced drivetrain losses. Expect better longevity under heavy use, but remember differential oil is not included and should be chosen to match your driving style.
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