This Yokomo Y2-508A kit contains the small replacement parts used when servicing ball-type differentials in RC models. Included are the T-nut, adjustment screw, coil spring and O-ring to support rebuilds or routine replacement.
The kit is geared toward hobbyists performing differential teardown and reassembly to restore adjustment range and preload response; swapping the spring or O-ring helps maintain smooth operation and grease retention.
Fit this kit during a ball-differential rebuild to replace worn adjustment parts and help preserve the differential's adjustment feel; handy to have spares if you rebuild diffs regularly.
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