This is the Associated differential ring set for the Stealth transmission versions of the Associated RC10B4, RC10T4, RC10B4.1, RC10T4.1, RC10GT, RC10GT2, and SC10. These differential rings are constructed of hardened steel.
Two Associated differential rings
Note: These rings are known as 1/8 differential rings. Not to be confused with regular 1/8 differential rings used with on-road cars; the rings for on-road cars have different inside and outside diameters.