This is a replacement Team Associated RC10B74.2 LTC Front/Rear Differential Kit.
LTC (low torque capacity) gear sets for the RC10B74 series buggies from Factory Team. Available in metal and plastic variants, these gear sets increase the drivability and traction of the Team Associated B74. The new design of high tooth count and smaller teeth allows for smoother differential action that won't lock on power. These gear sets come with the gears and shims needed for one differential.