The Serpent 401021 ring gear has been produced to fit the S400 and S411 chassis with precise 5x6x2 dimensions. Its construction focuses on dimensional accuracy and wear resistance to keep your drivetrain operating cleanly.
Specifically matched to the S400 1/10 190mm EP layout, this ring supports smoother power flow and more predictable handling during spirited driving. It is a practical choice for replacing worn parts or improving drivetrain reliability.
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