The Yokomo YOKB2-503D differential gear is an aftermarket replacement component intended for use with the B-Max2 platform. It is supplied to replace the differential assembly and functions as a hop-up spare for maintenance or setup refinement.
Fitment is limited to the B-Max2 series according to the designation; confirm your chassis type and differential housing compatibility prior to purchase. Installation involves standard drivetrain removal and reinstallation, paying attention to gear alignment and bearing fit to prevent premature wear.
From a tuning standpoint the unit influences torque distribution across driven wheels and therefore impacts corner entry, mid-corner grip and drive-off characteristics; fit it when testing different differential settings or when the original shows wear.
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