HPI Diff Ring 13.8x21mm D-Cut (4) HPI87064
HPI87064 HPI Racing Diff Ring 13.8x21mm D-Cut (4)

HPI Diff Ring 13.8x21mm D-Cut (4) HPI87064

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HPI Racing set of four replacement 13.8x21mm D-Cut differential rings for the Cup Racer vehicles.

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