This is the Yeah Racing Steel Front/Rear Gear Box Joint for Tamiya TT02. Great upgrade from the stock plastic part or could be used as a replacement of the broken parts. Yeah racing carefully crafted this item with high grade of material for maximum durability. Less room for flexing compare to the standard parts and therefore smoother acc/deceleration can be achieved. Additionally more power from the motor could be directly deliver to the wheels.
Yeah Racing Steel Front/Rear Unit Cup Joint (TT02)