The Serpent SER401851 midshaft pulley set is a replacement component aimed at owners servicing Medius X20 MID 1/10 EP models. Classified as a car kit spare part, it is produced to slot into the X20 assembly and help restore correct mechanical timing in the drivetrain.
Designed for the Medius X20 MID 1/10 EP kits (SER400033 and SER400034), this pulley delivers accurate rotational transfer and helps maintain consistent belt or shaft tension. The construction promotes longevity under normal hobby and competitive running.
Clean all mating parts before installing the SER401851 midshaft pulley set and verify alignment during assembly. Double-check fastener seating to avoid binding and perform a brief test run to confirm smooth operation.
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