Ceramic differential ball for YOKOMO R12. They're harder than standard steel balls and cause minimal usage, for them to be properly used for quite some time. Even when the differential modification screw is tightened, there's less ball crushing, to finish the differential operation very carefully.
Supported ChassisYR-X12 / YR-10F / YR-R12C3 / YR-R12C31 / YRF-001RF / YRF-001W / YR-X1219
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