Ceramic differential ball for YOKOMO R12. They are harder than standard metal balls and cause almost no use, for them to be utilized for a long time. Even when the differential modification screw is tightened, there's less ball crushing, to finish the differential operation carefully.
Supported ChassisYR-X12 / YR-10F / YR-R12C3 / YR-R12C31 / YRF-001RF / YRF-001W / YR-X1219
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